TED Recommendations

DK Osseo-Asare: What a scrapyard in Ghana can teach us about innovation - test

• Dale Dougherty We are makers (25) test
• Catarina Mota Play with smart materials (23) test
• Kamau Gachigi Success stories from Kenya's first makerspace (21) test
• Marcin Jakubowski Open-sourced blueprints for civilization (20) test
• Anil Gupta India's hidden hotbeds of invention (20) test

D-L Stewart: Scenes from a Black trans life - test

• Vernā Myers How to overcome our biases? Walk boldly toward them (46) test
• Alicia Garza, Patrisse Cullors and Opal Tometi An interview with the founders of Black Lives Matter (42) test
• Fabio Pacucci Can a black hole be destroyed? (41) test
• Julieanna L. Richardson The mission to safeguard Black history in the US (40) test
• Charles M. Blow The case for a new Great Migration in the US (39) test

Daan Roosegaarde: A smog vacuum cleaner and other magical city designs - test

• Alex Steffen The route to a sustainable future (40) test
• Scott Dinsmore How to find work you love (38) test
• Ricardo Semler How to run a company with (almost) no rules (38) test
• Dean Kamen To invent is to give (37) test
• Jeff Skoll My journey into movies that matter (36) test

Daina Ramey Berry: The electrifying speeches of Sojourner Truth - test

• Katherine Maher What Wikipedia teaches us about balancing truth and beliefs (28) test
• Luvvie Ajayi Jones Get comfortable with being uncomfortable (24) test
• Luvvie Ajayi Get comfortable with being uncomfortable (24) test
• Tom Honey Why would God create a tsunami? (23) test
• Christiane Amanpour How to seek truth in the era of fake news (22) test

Dale Dougherty: We are makers - test

• Kare Anderson Be an opportunity maker (32) test
• Scott Dinsmore How to find work you love (29) test
• Gus Worland Is someone you love suffering in silence? Here's what to do (29) test
• Larry Page Where's Google going next? (27) test
• Roy Bahat and Bryn Freedman How do we find dignity at work? (27) test

Dalia Mogahed: The attitudes that sparked Arab Spring - test

• Jimmy Carter Why I believe the mistreatment of women is the number one human rights abuse (36) test
• Wadah Khanfar A historic moment in the Arab world (35) test
• Melinda Gates Let's put birth control back on the agenda (34) test
• Wael Ghonim Inside the Egyptian revolution (34) test
• Sandi Toksvig A political party for women's equality (34) test

Dalia Mogahed: What it's like to be Muslim in America - test

• The TED Interview Dalia Mogahed on Islam in the world today (47) test
• Wale Elegbede It takes a community to eradicate hate (41) test
• Scott Dinsmore How to find work you love (41) test
• Lyra McKee How uncomfortable conversations can save lives (41) test
• Noah Feldman Politics and religion are technologies (37) test

Dallas Taylor: What silence can teach you about sound - test

• Hanako Sawada Test yourself Can you tell the difference between music and noise? (46) test
• Evelyn Glennie How to truly listen (43) test
• Julian Treasure Shh! Sound health in 8 steps (41) test
• José Bowen Beethoven the businessman (38) test
• Meklit Hadero The unexpected beauty of everyday sounds (38) test

Dambisa Moyo: Economic growth has stalled. Let's fix it - test

• Dambisa Moyo Is China the new idol for emerging economies? (53) test
• Yasheng Huang Does democracy stifle economic growth? (41) test
• Kate Raworth A healthy economy should be designed to thrive, not grow (41) test
• Alex Tabarrok How ideas trump crises (38) test
• Nick Hanauer The dirty secret of capitalism -- and a new way forward (37) test

Dambisa Moyo: Is China the new idol for emerging economies? - test

• Dambisa Moyo Economic growth has stalled. Let's fix it (53) test
• Bret Stephens and Yordanos Eyoel Democracy requires disagreement. Here's how to do it better (43) test
• Martin Jacques Understanding the rise of China (43) test
• Eric X. Li A tale of two political systems (43) test
• Kevin Rudd Are China and the US doomed to conflict? (42) test

Dame Ellen MacArthur: The surprising thing I learned sailing solo around the world - test

• Tracy Edwards Stop being a bystander in your own life (35) test
• Roz Savage Why I'm rowing across the Pacific (34) test
• Robert Neuwirth The power of the informal economy (33) test
• Fields Wicker-Miurin Learning from leadership's missing manual (33) test
• Andrew McAfee What will future jobs look like? (32) test

Dame Stephanie Shirley: Why do ambitious women have flat heads? - test

• Rha Goddess and Deepa Purushothaman 4 ways to redefine power at work to include women of color (41) test
• Sheryl Sandberg Why we have too few women leaders (40) test
• Sheryl Sandberg So we leaned in ... now what? (38) test
• Leila Hoteit 3 lessons on success from an Arab businesswoman (38) test
• Ricardo Coler Allá donde las mujeres mandan (38) test

Dame Vivian Hunt: How businesses can serve everyone, not just shareholders - test

• Charmian Gooch My wish To launch a new era of openness in business (33) test
• Chris McKnett The investment logic for sustainability (31) test
• Wendy Woods The business benefits of doing good (31) test
• Warren Valdmanis What makes a job "good" -- and the case for investing in people (30) test
• Harish Manwani Profit’s not always the point (29) test

Damian Palin: Mining minerals from seawater - test

• David Sedlak 4 ways we can avoid a catastrophic drought (39) test
• Lana Mazahreh 3 thoughtful ways to conserve water (36) test
• Balsher Singh Sidhu Are we running out of clean water? (35) test
• Deepika Kurup A young scientist's quest for clean water (34) test
• Kelsey Leonard Why lakes and rivers should have the same rights as humans (33) test

Damien Riehl: Why all melodies should be free for musicians to use - test

• Hrishikesh Hirway What you discover when you really listen (41) test
• Vusi Mahlasela "Thula Mama" (40) test
• Björn Ulvaeus How music streaming transformed songwriting (34) test
• Mark Ronson How sampling transformed music (31) test
• Kesha The alchemy of pop (27) test

Damion Searls: How does the Rorschach inkblot test work? - test

• Stefan C. Dombrowski The dark history of IQ tests (27) test
• Tien Nguyen How do pregnancy tests work? (24) test
• Marily Oppezzo Want to be more creative? Go for a walk (24) test
• Alex Gendler The Turing test Can a computer pass for a human? (23) test
• Robin Kramer Are you really as good at something as you think? (20) test

Damon Brown: How to choose your news - test

• Sinan Aral How we can protect truth in the age of misinformation (42) test
• Clay Shirky How social media can make history (35) test
• Johanna Blakley Social media and the end of gender (35) test
• Alessandro Acquisti What will a future without secrets look like? (34) test
• JP Rangaswami Information is food (33) test

Damon Davis: Courage is contagious - test

• Sharon Terry Science didn't understand my kids' rare disease until I decided to study it (40) test
• Ingrid Betancourt What six years in captivity taught me about fear and faith (35) test
• Elizabeth Gilbert It's OK to feel overwhelmed. Here's what to do next (35) test
• Sviatlana Tsikhanouskaya How to be fearless in the face of authoritarianism (35) test
• Cara E. Yar Khan The beautiful balance between courage and fear (35) test

Damon Gameau: The story that shapes your relationship with nature - test

• George Monbiot The new political story that could change everything (47) test
• Tyler Cowen Be suspicious of simple stories (45) test
• Emma Marris Nature is everywhere -- we just need to learn to see it (44) test
• Lori Gottlieb How changing your story can change your life (43) test
• Chimamanda Ngozi Adichie The danger of a single story (40) test

Damon Horowitz: Philosophy in prison - test

• Kathryn Schulz On being wrong (40) test
• Juan Enriquez How technology changes our sense of right and wrong (35) test
• Damon Horowitz We need a "moral operating system" (21) test
• Sam Harris Science can answer moral questions (20) test
• Ram Neta How do you know whom to trust? (19) test

Damon Horowitz: We need a "moral operating system" - test

• Susan Etlinger What do we do with all this big data? (32) test
• Mona Chalabi 3 ways to spot a bad statistic (32) test
• Taken for Granted Daniel Kahneman Doesn't Trust Your Intuition (32) test
• Tim Berners-Lee The next web (31) test
• Kathryn Schulz On being wrong (31) test

Dan Adams: A brief history of goths - test

• Michael Tilson Thomas Music and emotion through time (17) test
• David Byrne How architecture helped music evolve (15) test
• Philip Freeman The rise and fall of the Celtic warriors (14) test
• Lars Brownworth The city of walls Constantinople (14) test
• Petra Sijpesteijn and Birte Kristiansen The rise and fall of the medieval Islamic Empire (14) test

Dan Ariely: Are we in control of our own decisions? - test

• Dan Ariely Our buggy moral code (40) test
• Scott Dinsmore How to find work you love (38) test
• Linus Torvalds The mind behind Linux (37) test
• Justin Trudeau Leadership lessons from the prime minister of Canada (37) test
• Dan Ariely What makes us feel good about our work? (37) test

Dan Ariely: Beware conflicts of interest - test

• Amy Webb How I hacked online dating (27) test
• Jamie Heywood The big idea my brother inspired (25) test
• Ed Gavagan A story about knots and surgeons (25) test
• Vernā Myers How to overcome our biases? Walk boldly toward them (24) test
• Lee Thomas How I help people understand vitiligo (24) test

Dan Ariely: How equal do we want the world to be? You'd be surprised - test

• Dan Ariely How to change your behavior for the better (50) test
• Scott Galloway Why young people are worse off than their parents — and what to do about it (48) test
• Scott Dinsmore How to find work you love (47) test
• Keith Payne The psychology of inequality and political division (46) test
• Thomas Piketty New thoughts on capital in the twenty-first century (43) test

Dan Ariely: How to change your behavior for the better - test

• Scott Dinsmore How to find work you love (53) test
• Ricardo Semler How to run a company with (almost) no rules (51) test
• Dan Ariely How equal do we want the world to be? You'd be surprised (50) test
• Scott Galloway Why young people are worse off than their parents — and what to do about it (50) test
• Dan Ariely What makes us feel good about our work? (48) test

Dan Ariely: Our buggy moral code - test

• Dan Ariely What makes us feel good about our work? (53) test
• Scott Dinsmore How to find work you love (52) test
• Ricardo Semler How to run a company with (almost) no rules (51) test
• Erez Yoeli How to motivate people to do good for others (49) test
• Tanya Menon The secret to great opportunities? The person you haven't met yet (49) test

Dan Ariely: What makes us feel good about our work? - test

• Scott Dinsmore How to find work you love (57) test
• Paul Hudson and Lindsay Levin Leadership in the age of AI (53) test
• Dan Ariely Our buggy moral code (53) test
• Ricardo Semler How to run a company with (almost) no rules (53) test
• Linus Torvalds The mind behind Linux (53) test

Dan Barasch: A park underneath the hustle and bustle of New York City - test

• Amanda Burden How public spaces make cities work (47) test
• Miru Kim My underground art explorations (41) test
• Liu Thai Ker The architectural mastermind behind modern Singapore (39) test
• Mick Cornett How an obese town lost a million pounds (39) test
• Elizabeth Diller A stealthy reimagining of urban public space (39) test

Dan Barber: A foie gras parable - test

• Dan Barber How I fell in love with a fish (18) test
• Jonathan Foley The problem with food and climate — and how to fix it (17) test
• Erin Baumgartner Big data, small farms and a tale of two tomatoes (17) test
• Marcus Samuelsson A master chef's take on food, culture and community (16) test
• George Monbiot Can we feed ourselves without devouring the planet? (16) test

Dan Barber: How I fell in love with a fish - test

• Paul Greenberg The four fish we're overeating -- and what to eat instead (57) test
• Mike Velings The case for fish farming (54) test
• Jackie Savitz Save the oceans, feed the world! (48) test
• Nicholas Amendolare What is the tragedy of the commons? (45) test
• Mike Gil Could fish social networks help us save coral reefs? (44) test

Dan Bell: Inside America's dead shopping malls - test

• Jehane Noujaim My wish A global day of film (28) test
• Ze Frank My web playroom (26) test
• Chris Milk How virtual reality can create the ultimate empathy machine (26) test
• Jay Silver Hack a banana, make a keyboard! (25) test
• Liz Diller A new museum wing ... in a giant bubble (25) test

Dan Berkenstock: The world is one big dataset. Now, how to photograph it ... - test

• Will Marshall Tiny satellites show us the Earth as it changes in near-real-time (49) test
• Natalie Panek Let's clean up the space junk orbiting Earth (40) test
• Danielle Wood 6 space technologies we can use to improve life on Earth (30) test
• Andrew Ng How AI could empower any business (28) test
• Stephen Lawler Tour Microsoft's Virtual Earth (27) test

Dan Bricklin: Meet the inventor of the electronic spreadsheet - test

• Jer Thorp Make data more human (31) test
• David Carson Design and discovery (30) test
• Ricardo Semler How to run a company with (almost) no rules (30) test
• Tom Griffiths 3 ways to make better decisions -- by thinking like a computer (29) test
• David Pogue Simplicity sells (28) test

Dan Buettner: How to live to be 100+ - test

• Marvin Minsky Health and the human mind (41) test
• Laura Carstensen Older people are happier (39) test
• Ricardo Semler How to run a company with (almost) no rules (39) test
• Robert Waldinger What makes a good life? Lessons from the longest study on happiness (39) test
• Scott Dinsmore How to find work you love (39) test

Dan Clay: Why you should bring your whole self to work - test

• Sarah Aviram Does more freedom at work mean more fulfillment? (29) test
• Jason Fried Why work doesn't happen at work (29) test
• Taken for Granted Brené Brown on What Vulnerability Isn't (28) test
• Sergey Brin + Larry Page The genesis of Google (27) test
• Gitte Frederiksen Great leadership is a network, not a hierarchy (27) test

Dan Cobley: What physics taught me about marketing - test

• Jessica Apotheker What will happen to marketing in the age of AI? (33) test
• Morgan Spurlock The greatest TED Talk ever sold (32) test
• Marcos Salazar 5 steps to building a personal brand you feel good about (31) test
• Helen Czerski The fascinating physics of everyday life (30) test
• Jason McCue Terrorism is a failed brand (25) test

Dan Dennett: Cute, sexy, sweet, funny - test

• Nicole Avena How sugar affects the brain (21) test
• Helen Fisher The brain in love (19) test
• Alison Gopnik What do babies think? (18) test
• Helen Fisher Why we love, why we cheat (18) test
• Shari Liu How babies think about danger (17) test

Dan Dennett: Dangerous memes - test

• Susan Blackmore Memes and "temes" (38) test
• Chris Anderson and Monique Ruff-Bell Ideas change everything — and what's next for TED (37) test
• Steven Johnson Where good ideas come from (36) test
• Bill Burnett 5 steps to designing the life you want (32) test
• Ricardo Semler How to run a company with (almost) no rules (32) test

Dan Dennett: Let's teach religion -- all religion -- in schools - test

• Rick Warren A life of purpose (34) test
• Marvin Minsky Health and the human mind (34) test
• Billy Graham On technology and faith (34) test
• Alain de Botton Atheism 2.0 (33) test
• Bill Burnett 5 steps to designing the life you want (30) test

Dan Dennett: The illusion of consciousness - test

• David Chalmers How do you explain consciousness? (46) test
• John Searle Our shared condition -- consciousness (42) test
• Paul Hudson and Lindsay Levin Leadership in the age of AI (31) test
• Jeff Hawkins How brain science will change computing (31) test
• Linus Torvalds The mind behind Linux (30) test

Dan Finkel: 5 ways to share math with kids - test

• Dan Meyer Math class needs a makeover (45) test
• Conrad Wolfram Teaching kids real math with computers (42) test
• Eduardo Sáenz de Cabezón Math is forever (37) test
• Daphne Koller What we're learning from online education (35) test
• Sian Leah Beilock Why we choke under pressure -- and how to avoid it (34) test

Dan Finkel: Can you outsmart Fate and break her ancient curse? - test

• Alex Rosenthal Can you solve the secret assassin society riddle? (21) test
• James McManus Why is Texas hold 'em so popular? (20) test
• Marco Tempest A cyber-magic card trick like no other (17) test
• John Hunter Teaching with the World Peace Game (14) test
• Alice Pailhès Secrets of the mind and free will -- revealed by magic tricks (14) test

Dan Finkel: Can you solve the Ragnarok riddle? - test

• Dan Van der Vieren How the Königsberg bridge problem changed mathematics (29) test
• Lisa Winer Can you solve the virus riddle? (23) test
• Matthew Childs 9 life lessons from rock climbing (15) test
• Alex Rosenthal Can you solve the rogue submarine riddle? (15) test
• Alex Rosenthal Can you solve the rogue submarine riddle? Difficulty level Master (15) test

Dan Finkel: Can you solve the cursed dice riddle? - test

• Yelle "Interpassion" / "Ba$$in" (27) test
• Dan Katz Can you solve the cheating royal riddle? (26) test
• Alex Rosenthal Can you solve the rogue submarine riddle? (20) test
• Alex Rosenthal Can you solve the rogue submarine riddle? Difficulty level Master (20) test
• James Tanton Can you solve the computer virus riddle? (17) test

Dan Finkel: Can you solve the giant cat army riddle? - test

• Arthur Benjamin The magic of Fibonacci numbers (30) test
• Alex Gendler Can you solve the secret sauce riddle? (28) test
• Dan Finkel Can you solve the secret werewolf riddle? (26) test
• Arthur Benjamin A performance of "Mathemagic" (23) test
• Dennis Wildfogel How big is infinity? (23) test

Dan Finkel: Can you solve the giant spider riddle? - test

• Daniel Finkel Can you solve the time travel riddle? (22) test
• Dan Finkel Can you solve the world's most evil wizard riddle? (21) test
• Alexander Leitner Can time be wasted? (21) test
• Cheryl Hayashi The magnificence of spider silk (21) test
• Andrew Zimmerman Jones Does time exist? (20) test

Dan Finkel: Can you solve the honeybee riddle? - test

• Anand Varma The first 21 days of a bee's life (49) test
• Marla Spivak Why bees are disappearing (45) test
• Dennis vanEngelsdorp A plea for bees (39) test
• Noah Wilson-Rich Every city needs healthy honey bees (39) test
• Emma Bryce The case of the vanishing honeybees (34) test

Dan Finkel: Can you solve the riddle and escape Hades? - test

• Peter Donnelly How juries are fooled by statistics (21) test
• Graham Shaw Why people believe they can't draw (21) test
• Andrew Pontzen and Tom Whyntie The fundamentals of space-time Part 2 (20) test
• Kevin Surace Eco-friendly drywall (18) test
• Tom Griffiths 3 ways to make better decisions -- by thinking like a computer (17) test

Dan Finkel: Can you solve the rogue AI riddle? - test

• Alex Gendler Can you solve the monster duel riddle? (52) test
• Lana Mazahreh 3 thoughtful ways to conserve water (39) test
• David Sedlak 4 ways we can avoid a catastrophic drought (37) test
• Rob Harmon How to keep rivers and streams flowing (36) test
• Balsher Singh Sidhu Are we running out of clean water? (36) test

Dan Finkel: Can you solve the secret werewolf riddle? - test

• Dan Finkel Can you solve the giant cat army riddle? (26) test
• Daniel Finkel Can you solve the unstoppable blob riddle? (19) test
• Alex Rosenthal The Artists | Think Like A Coder, Ep 5 (18) test
• Alex Gendler Can you solve the secret sauce riddle? (17) test
• Jack Choi On the virtual dissection table (16) test

Dan Finkel: Can you solve the world's most evil wizard riddle? - test

• Wajdi Mohamed Ratemi The mathematical secrets of Pascal's triangle (23) test
• Dennis Wildfogel How big is infinity? (23) test
• Daniel Finkel Can you solve the time travel riddle? (22) test
• Dan Finkel Can you solve the giant spider riddle? (21) test
• Dan Finkel Can you solve the giant cat army riddle? (19) test

Dan Finkel: Can you steal the most powerful wand in the wizarding world? - test

• Trebor Scholz Stuck in the gig economy? Try platform co-ops instead (33) test
• Arash Shadman What causes kidney stones? (23) test
• Sarah Parcak Hunting for Peru's lost civilizations -- with satellites (19) test
• Shou Chew TikTok's CEO on its future -- and what makes its algorithm different (18) test
• Dan Finkel Can you solve the riddle and escape Hades? (16) test

Dan Finkel: This one weird trick will get you infinite gold - test

• Jennifer Lu Can you solve the counterfeit coin riddle? (42) test
• Alex Rosenthal Can you solve the rogue submarine riddle? (20) test
• Alex Rosenthal Can you solve the rogue submarine riddle? Difficulty level Master (20) test
• Arthur Benjamin A performance of "Mathemagic" (19) test
• Lyla Latif The true cost of gold (18) test

Dan Gartenberg: The brain benefits of deep sleep -- and how to get more of it - test

• Matt Walker Sleep is your superpower (73) test
• Russell Foster Why do we sleep? (73) test
• Matt Walker A walk through the stages of sleep (69) test
• Jen Gunter Do you really need 8 hours of sleep every night? (68) test
• Masako Tamaki Can you be awake and asleep at the same time? (67) test

Dan Gibson: How to build synthetic DNA and send it across the internet - test

• Sebastian Kraves The era of personal DNA testing is here (55) test
• Craig Venter Watch me unveil "synthetic life" (47) test
• Jennifer Doudna How CRISPR lets us edit our DNA (47) test
• Drew Berry Animations of unseeable biology (43) test
• Paul Rothemund DNA folding, in detail (43) test

Dan Gilbert: The psychology of your future self - test

• Scott Dinsmore How to find work you love (55) test
• Seth Godin The tribes we lead (51) test
• Achim Steiner Humanity's planet-shaping powers -- and what they mean for the future (50) test
• Bence Nanay The "End of History" Illusion (50) test
• Laura Carstensen Older people are happier (49) test

Dan Gilbert: The surprising science of happiness - test

• Matt Killingsworth Want to be happier? Stay in the moment (45) test
• Matthieu Ricard The habits of happiness (44) test
• Nancy Etcoff Happiness and its surprises (42) test
• Daniel Kahneman The riddle of experience vs. memory (41) test
• Dan Gilbert The psychology of your future self (35) test

Dan Gilbert: Why we make bad decisions - test

• Erez Yoeli How to motivate people to do good for others (47) test
• Dan Ariely Our buggy moral code (47) test
• Esther Duflo Social experiments to fight poverty (47) test
• Scott Galloway Why young people are worse off than their parents — and what to do about it (46) test
• Scott Dinsmore How to find work you love (45) test

Dan Goods: How NASA invented a ventilator for COVID-19 ... in 37 days - test

• Patty McCord 4 lessons the pandemic taught us about work, life and balance (42) test
• Debbie Lovich 3 tips for leaders to get the future of work right (40) test
• Jason Fried Why work doesn't happen at work (39) test
• Anjali Sud and Stephanie Mehta How great leaders take on uncertainty (38) test
• WorkLife with Adam Grant When work takes over your life (38) test

Dan Gross: Why gun violence can't be our new normal - test

• Diane Wolk-Rogers A Parkland teacher's homework for us all (47) test
• Peter van Uhm Why I chose a gun (38) test
• Ilona Szabó de Carvalho 4 lessons I learned from taking a stand against drugs and gun violence (37) test
• Lucy McBath My quest to end the horror of gun violence in the US (36) test
• Jamil Zaki How to escape the cynicism trap (33) test

Dan Harris: The benefits of not being a jerk to yourself - test

• Keiichiro Hirano Love others to love yourself (40) test
• Robert Waldinger The secret to a happy life -- lessons from 8 decades of research (35) test
• Gus Worland Is someone you love suffering in silence? Here's what to do (34) test
• Nora McInerny We don't "move on" from grief. We move forward with it (34) test
• WorkLife with Adam Grant Fadbusting with Stephen Dubner (33) test

Dan Jørgensen: How wind energy could power Earth ... 18 times over - test

• Rebecca J. Barthelmie and Sara C. Pryor How do wind turbines work? (47) test
• Maxim Timchenko The renewable energy revolution happening in Ukraine (37) test
• Ramón Méndez Galain This country runs on 98 percent renewable electricity (37) test
• Ramón Méndez Galain This country runs on 98 percent renewable energy (37) test
• TED-Ed How much electricity does it take to power the world? (35) test

Dan Katz and Alex Rosenthal: Can you solve the sorting hat riddle? - test

• Kate Wagner I hate McMansions -- and you should too (36) test
• Antón García-Abril How prefab homes can transform affordable housing (34) test
• Dan Van der Vieren Can you solve "Einstein's Riddle"? (33) test
• Catherine Mohr The tradeoffs of building green (20) test
• Derek Sivers Weird, or just different? (20) test

Dan Katz: Can you solve the basketball riddle? - test

• Ken Goldberg 4 lessons from robots about being human (23) test
• Guy Hoffman Robots with "soul" (22) test
• Stuart Russell 3 principles for creating safer AI (20) test
• Oscar Schwartz Can a computer write poetry? (19) test
• Shervin Khodabandeh Why people and AI make good business partners (19) test

Dan Katz: Can you solve the cheating royal riddle? - test

• Dan Finkel Can you solve the cursed dice riddle? (26) test
• Gordon Hamilton Can you solve the Mondrian squares riddle? (25) test
• Arthur Benjamin The magic of Fibonacci numbers (24) test
• Alex Rosenthal Can you solve the rogue submarine riddle? (23) test
• Alex Rosenthal Can you solve the rogue submarine riddle? Difficulty level Master (23) test

Dan Knights: How we study the microbes living in your gut - test

• Rob Knight How our microbes make us who we are (38) test
• Jonathan Eisen Meet your microbes (35) test
• Steven Allison Earth's original inhabitants -- and their role in combating climate change (34) test
• Jennifer Doudna CRISPR's next advance is bigger than you think (33) test
• Jessica Green and Karen Guillemin You are your microbes (27) test

Dan Kwartler: How fast can a vaccine be made? - test

• Jen Gunter How vaccines are developed -- and why they're safe (47) test
• Ofer Levy The new science of personalized vaccines (44) test
• Seth Berkley The quest for the coronavirus vaccine (41) test
• Seth Berkley HIV and flu -- the vaccine strategy (40) test
• Kaitlyn Sadtler and Elizabeth Wayne How the COVID-19 vaccines were created so quickly (37) test

Dan Kwartler: One of the world’s oldest condiments - test

• George Zaidan Why is ketchup so hard to pour? (30) test
• Paul Greenberg The four fish we're overeating -- and what to eat instead (29) test
• Dan Barber How I fell in love with a fish (26) test
• Jackie Savitz Save the oceans, feed the world! (25) test
• Malcolm Gladwell Choice, happiness and spaghetti sauce (25) test

Dan Kwartler: The diseases that changed humanity forever - test

• Sharon N. DeWitte The past present and future of the bubonic plague (29) test
• Romina Libster The power of herd immunity (25) test
• David Heymann What we do (and don't) know about the coronavirus (25) test
• Larry Brilliant The case for optimism (23) test
• TED-Ed Why plague doctors wore beaked masks (22) test

Dan Kwartler: The myth of Gawain and the Green Knight - test

• Vaitea Cowan How green hydrogen could end the fossil fuel era (20) test
• John Hardy My green school dream (20) test
• Alex Gendler Can you solve the famously difficult green-eyed logic puzzle? (19) test
• J. V. Maranto History's deadliest colors (16) test
• Jim Hagemann Snabe Dreams and details for a decarbonized future (16) test

Dan Kwartler: What causes headaches? - test

• Joshua W. Pate The mysterious science of pain (23) test
• Karen D. Davis How does your brain respond to pain? (22) test
• Amy Baxter How to hack your brain when you're in pain (21) test
• Sheetal DeCaria The bias behind your undiagnosed chronic pain (20) test
• Jen Gunter 5 things you should know about back pain (20) test

Dan Kwartler: What causes insomnia? - test

• Russell Foster Why do we sleep? (56) test
• Jen Gunter Do you really need 8 hours of sleep every night? (53) test
• Matt Walker Sleep is your superpower (53) test
• Matt Walker How much sleep do you really need? (48) test
• Dan Gartenberg The brain benefits of deep sleep -- and how to get more of it (46) test

Dan Kwartler: What would happen if every human suddenly disappeared? - test

• David Biello How long will human impacts last? (32) test
• Spencer Wells A family tree for humanity (27) test
• Lord Nicholas Stern The state of the climate — and what we might do about it (27) test
• Rachel Sussman The world's oldest living things (27) test
• Jane Goodall What separates us from chimpanzees? (26) test

Dan Kwartler: Why don't we cover the desert with solar panels? - test

• Shannon Odell Are solar panels worth it? (61) test
• Alexandros Charalambides Why aren't we only using solar power? (59) test
• Marjan van Aubel The beautiful future of solar power (59) test
• Hannah Bürckstümmer A printable, flexible, organic solar cell (52) test
• Harald Haas Forget Wi-Fi. Meet the new Li-Fi Internet (47) test

Dan Kwartler: Why should you read "Dune" by Frank Herbert? - test

• Kate Messner How to build a fictional world (18) test
• Magnus Larsson Turning dunes into architecture (18) test
• Richard Dawkins Why the universe seems so strange (17) test
• Fei-Fei Li With spatial intelligence, AI will understand the real world (16) test
• Deb Willis and Hank Willis Thomas A mother and son united by love and art (15) test

Dan Meyer: Math class needs a makeover - test

• Dan Finkel 5 ways to share math with kids (45) test
• Conrad Wolfram Teaching kids real math with computers (43) test
• Daphne Koller What we're learning from online education (37) test
• Sian Leah Beilock Why we choke under pressure -- and how to avoid it (36) test
• Trish Millines Dziko How schools can nurture every student's genius (34) test

Dan Pacholke: How prisons can help inmates live meaningful lives - test

• Peter Ouko From death row to law graduate (35) test
• JR Why art is a tool for hope (33) test
• Clementine Jacoby How bad data traps people in the US justice system (32) test
• Roy Bahat and Bryn Freedman How do we find dignity at work? (30) test
• Nick Turner and Whitney Pennington Rodgers How to fix two of the most broken systems in the US (30) test

Dan Pallotta: The dream we haven't dared to dream - test

• Amy Adkins Why do we dream? (34) test
• Shah Rukh Khan Thoughts on humanity, fame and love (33) test
• Bel Pesce 5 ways to kill your dreams (32) test
• Sir Ken Robinson Bring on the learning revolution! (29) test
• The TED Interview Elizabeth Gilbert shows up for ... everything (29) test

Dan Pallotta: The way we think about charity is dead wrong - test

• Natalie Cargill How to solve the world's biggest problems (40) test
• Dilip Ratha The hidden force in global economics sending money home (38) test
• Ngozi Okonjo-Iweala Want to help Africa? Do business here (38) test
• Michael Norton How to buy happiness (38) test
• Ray Dalio What coronavirus means for the global economy (37) test

Dan Phillips: Creative houses from reclaimed stuff - test

• Frank Gehry My days as a young rebel (25) test
• Simone Giertz Why you should make useless things (25) test
• Andrew Dent To eliminate waste, we need to rediscover thrift (23) test
• Tom Rielly A comic sendup of TED2006 (22) test
• Paul Pholeros How to reduce poverty? Fix homes (21) test

Dan Pink: The puzzle of motivation - test

• Jason Fried Why work doesn't happen at work (44) test
• WorkLife with Adam Grant When work takes over your life (42) test
• David Lee Why jobs of the future won't feel like work (42) test
• Debbie Lovich 3 tips for leaders to get the future of work right (40) test
• Ricardo Semler How to run a company with (almost) no rules (38) test

Dan Reinstein: How does laser eye surgery work? - test

• Joshua Harvey The evolution of the human eye (35) test
• Nitish Padmanaban Autofocusing reading glasses of the future (33) test
• Joshua Silver Adjustable liquid-filled eyeglasses (29) test
• Thomas W. Cronin Which animal has the best eyesight? (26) test
• Colm Kelleher Is light a particle or a wave? (22) test

Dan Reisel: The neuroscience of restorative justice - test

• Jeff Hawkins How brain science will change computing (39) test
• Nita Farahany Your right to mental privacy in the age of brain-sensing tech (38) test
• Kay M. Tye What investigating neural pathways can reveal about mental health (37) test
• Sergiu P. Pasca How we're reverse engineering the human brain in the lab (37) test
• Sarah-Jayne Blakemore The mysterious workings of the adolescent brain (37) test

Dan Sayers: The secret society of the Great Dismal Swamp - test

• Scott Dinsmore How to find work you love (29) test
• John Biewen The lie that invented racism (28) test
• David Lammy and Justin J. Pearson How to be a leader for climate justice (27) test
• Wael Ghonim Inside the Egyptian revolution (27) test
• Brittney Cooper The racial politics of time (26) test

Dan Schulman: What COVID-19 means for the future of commerce, capitalism and cash - test

• Ajay Banga Financial inclusion, the digital divide and other thoughts on the future of money (44) test
• Ray Dalio What coronavirus means for the global economy (40) test
• Bill Clinton My wish Rebuilding Rwanda (39) test
• Cristina Junqueira and Elena Crescia How to discover your business's competitive advantage (38) test
• Don Tapscott How the blockchain is changing money and business (37) test

Dan Shipper: The unexpected key to boosting your productivity - test

• Jason Fried Why work doesn't happen at work (36) test
• WorkLife with Adam Grant When work takes over your life (34) test
• Juliet Schor The case for a 4-day work week (34) test
• WorkLife with Adam Grant The real reason you procrastinate (33) test
• Adam Whybrew Why you should talk about your anxiety at work (32) test

Dan Van der Vieren: Can you solve "Einstein's Riddle"? - test

• Kate Wagner I hate McMansions -- and you should too (37) test
• Antón García-Abril How prefab homes can transform affordable housing (37) test
• Dan Katz and Alex Rosenthal Can you solve the sorting hat riddle? (33) test
• Derek Sivers Weird, or just different? (23) test
• Catherine Mohr The tradeoffs of building green (23) test

Dan Van der Vieren: How the Königsberg bridge problem changed mathematics - test

• Ian Firth Bridges should be beautiful (29) test
• Dan Finkel Can you solve the Ragnarok riddle? (29) test
• Lisa Winer Can you solve the virus riddle? (18) test
• Daniele Quercia Happy maps (18) test
• Uma Adwani The hidden messages in multiplication (16) test

Dan Widmaier: The future of fashion -- made from mushrooms - test

• Eben Bayer Are mushrooms the new plastic? (36) test
• Suzanne Lee Why "biofabrication" is the next industrial revolution (34) test
• Andras Forgacs Leather and meat without killing animals (33) test
• Karinna Grant What's the point of digital fashion? (32) test
• Gala Marija Vrbanic The new reality of fashion is digital (29) test

Dana Gunders: How to turn the tables on food waste - test

• Tristram Stuart The global food waste scandal (71) test
• Ndidi Okonkwo Nwuneli The future of the food ecosystem -- and the power of your plate (66) test
• Jasmine Crowe What we're getting wrong in the fight to end hunger (63) test
• Tessa Clarke The surprising climate benefits of sharing your stuff (59) test
• Aparna Pallavi What foods did your ancestors love? (59) test

Dana Kanze: The real reason female entrepreneurs get less funding - test

• Hector Lanz How do focus groups work? (21) test
• Temie Giwa-Tubosun The funding gap in start-up investing (21) test
• Meg Jay Essential questions to ask your future self (20) test
• Paul Tasner How I became an entrepreneur at 66 (20) test
• Robin Hauser The likability dilemma for women leaders (19) test

Daniel Alexander Jones: What to do when everything feels broken - test

• Alicia Eggert Imaginative sculptures that explore how we perceive reality (21) test
• Anab Jain Why we need to imagine different futures (20) test
• His Holiness Pope Francis Why the only future worth building includes everyone (20) test
• Charlie Jane Anders Go ahead, dream about the future (20) test
• The TED Interview How to be a futurist (20) test

Daniel Bögre Udell: How to save a language from extinction - test

• David Peterson Why language is humanity's greatest invention (46) test
• Poet Ali The language of being human (45) test
• John McWhorter 4 reasons to learn a new language (44) test
• Archie Crowley Language around gender and identity evolves (and always has) (43) test
• Lindsay Morcom A history of Indigenous languages -- and how to revitalize them (43) test

Daniel Dulek: How big is a mole? (Not the animal, the other one.) - test

• Anupam Mishra The ancient ingenuity of water harvesting (23) test
• Jakob Magolan A crash course in organic chemistry (22) test
• Lana Mazahreh 3 thoughtful ways to conserve water (22) test
• Balsher Singh Sidhu Are we running out of clean water? (22) test
• Zachary Metz Where did Earth's water come from? (22) test

Daniel Engber: How the progress bar keeps you sane - test

• Scott Dinsmore How to find work you love (39) test
• Juan Enriquez A personal plea for humanity at the US-Mexico border (34) test
• Michael Specter The danger of science denial (34) test
• Wael Ghonim Inside the Egyptian revolution (34) test
• Ricardo Semler How to run a company with (almost) no rules (34) test

Daniel Finkel: Can you solve the alien probe riddle? - test

• Susan G. Wardle Seeing things that aren't there? It's pareidolia (31) test
• Colm Kelleher How we see color (24) test
• Siegfried Woldhek The search for the true face of Leonardo (22) test
• James Tanton Can you solve the Big Bang riddle? (18) test
• James Tanton Can you survive the creation of the universe by solving this riddle? (18) test

Daniel Finkel: Can you solve the cuddly duddly fuddly wuddly riddle? - test

• Daniel Finkel Can you solve the time travel riddle? (28) test
• Natalie MacMaster Cape Breton fiddling in reel time (24) test
• Nassim Assefi and Brian A. Levine How in vitro fertilization (IVF) works (24) test
• Steve Rothstein Would you raise the bird that murdered your children? (23) test
• Victoria Hwang What is the rarest color in nature? (23) test

Daniel Finkel: Can you solve the dark matter fuel riddle? - test

• Ryah Whalen 3 ways to make flying more climate-friendly (23) test
• Judd A. Schorr Can you solve the airplane riddle? (23) test
• Alex Gendler Can you solve the death race riddle? (22) test
• Jim Hagemann Snabe Dreams and details for a decarbonized future (22) test
• Shannon Odell This is what happens when you hit the gas (22) test

Daniel Finkel: Can you solve the jail break riddle? - test

• Andrew Zimmerman Jones Does time exist? (21) test
• Laura Vanderkam How to gain control of your free time (21) test
• Abha Dawesar Life in the "digital now" (21) test
• Alexander Leitner Can time be wasted? (20) test
• Andrew Pontzen and Tom Whyntie The fundamentals of space-time Part 2 (20) test

Daniel Finkel: Can you solve the killer robo-ants riddle? - test

• Deborah Gordon The emergent genius of ant colonies (35) test
• Deborah Gordon What ants teach us about the brain, cancer and the Internet (33) test
• Deborah Gordon Inside the ant colony (31) test
• Francesca Barbero Would you raise the baby that ate your siblings? (26) test
• Charles Wallace When you're an ant but also a fungus tycoon (15) test

Daniel Finkel: Can you solve the multiverse rescue mission riddle? - test

• Dennis Hong 7 new species of robot that jump, dance — and walk on water (34) test
• Leila Takayama What's it like to be a robot? (33) test
• Rodney Brooks Robots will invade our lives (33) test
• Ken Goldberg 4 lessons from robots about being human (33) test
• Vijay Kumar Robots that fly ... and cooperate (32) test

Daniel Finkel: Can you solve the sea monster riddle? - test

• Alex Rosenthal Can you solve the rogue submarine riddle? (34) test
• Alex Rosenthal Can you solve the rogue submarine riddle? Difficulty level Master (34) test
• Tanya Khovanova Can you solve the Leonardo da Vinci riddle? (33) test
• Arthur Benjamin A performance of "Mathemagic" (32) test
• Henri Picciotto Can you solve the alien pyramid riddle? (30) test

Daniel Finkel: Can you solve the time travel riddle? - test

• Natalie MacMaster Cape Breton fiddling in reel time (36) test
• Victoria Hwang What is the rarest color in nature? (31) test
• Daniel Finkel Can you solve the cuddly duddly fuddly wuddly riddle? (28) test
• Bill T. Jones The dancer, the singer, the cellist ... and a moment of creative magic (28) test
• David Gruber Glow-in-the-dark sharks and other stunning sea creatures (27) test

Daniel Finkel: Can you solve the time traveling car riddle? - test

• Andrew Zimmerman Jones Does time exist? (33) test
• Laura Vanderkam How to gain control of your free time (28) test
• Alexander Leitner Can time be wasted? (28) test
• Minda Dentler What I learned when I conquered the world's toughest triathlon (26) test
• Imogen Malpas Can we see time? Exploring synesthesia (25) test

Daniel Finkel: Can you solve the troll's paradox riddle? - test

• Dennis E. Shasha Can you solve the fantasy election riddle? (28) test
• Marcus du Sautoy The paradox at the heart of mathematics Gödel's Incompleteness Theorem (27) test
• Drew Curtis How I beat a patent troll (14) test
• Soraya Field Fiorio A day in the life of an ancient Babylonian business mogul (14) test
• Lindsey A. Sherrill Are you an ethical true crime fan? 4 questions to ask (12) test

Daniel Finkel: Can you solve the unstoppable blob riddle? - test

• Dan Finkel Can you solve the secret werewolf riddle? (19) test
• Alex Rosenthal and George Zaidan The case of the missing fractals (15) test
• Wajdi Mohamed Ratemi The mathematical secrets of Pascal's triangle (14) test
• Daniel Finkel Can you solve the time travel riddle? (14) test
• Alex Gendler Can you solve the bridge riddle? (13) test

Daniel Finkel: Can you solve the vampire hunter riddle? - test

• Colm Kelleher Is light a particle or a wave? (36) test
• Rogier van der Heide Why light needs darkness (35) test
• Lucianne Walkowicz Light waves, visible and invisible (34) test
• Dragana Rogulja How artificial light affects our health (32) test
• Kelsey Johnson The problem of light pollution -- and 5 ridiculously easy ways to fix it (31) test

Daniel Garrie: Defining cyberwarfare... in hopes of preventing it - test

• P.W. Singer Military robots and the future of war (32) test
• Gabrielle Rifkind How to prevent — or stop — a war (32) test
• Yuval Noah Harari The war in Ukraine could change everything (26) test
• Emma Belcher Nuclear threat and the war in Ukraine (23) test
• Jane Ferguson Life on the frontlines of war reporting (23) test

Daniel Goldstein: The battle between your present and future self - test

• Charlie Jane Anders Go ahead, dream about the future (39) test
• Anab Jain Why we need to imagine different futures (37) test
• Wendy De La Rosa 3 psychological tricks to help you save money (36) test
• The TED Interview How to be a futurist (35) test
• Meg Jay Essential questions to ask your future self (35) test

Daniel Goleman: Why aren't we more compassionate? - test

• Olivia Remes How to cope with loneliness (32) test
• Robert Waldinger The secret to a happy life -- lessons from 8 decades of research (32) test
• Ricardo Semler How to run a company with (almost) no rules (30) test
• Abigail Marsh Why some people are more altruistic than others (29) test
• Read Montague What we're learning from 5,000 brains (29) test

Daniel Gregory: How do you know you're not dreaming? - test

• Amy Adkins Why do we dream? (40) test
• Matt Walker The surprising health benefits of dreaming (36) test
• Dan Pallotta The dream we haven't dared to dream (23) test
• Felice Belle and Jennifer Murphy How we became sisters (19) test
• James Zucker How do you know you exist? (19) test

Daniel H. Cohen: For argument's sake - test

• Neal Katyal How to win an argument (at the US Supreme Court, or anywhere) (32) test
• Hugo Mercier How can you change someone's mind? (31) test
• Steven Pinker and Rebecca Newberger Goldstein The long reach of reason (19) test
• Keith Lowe Why we need to stop obsessing over World War II (18) test
• Gabrielle Rifkind How to prevent — or stop — a war (17) test

Daniel H. Pink: 4 kinds of regret -- and what they teach you about yourself - test

• Kathryn Schulz Don't regret regret (56) test
• Brian S. Lowery and Kylan Gibbs What makes us human in the age of AI? A psychologist and a technologist answer (34) test
• The TED Interview Daniel Kahneman wants you to doubt yourself. Here's why (33) test
• Scott Dinsmore How to find work you love (32) test
• Justin Trudeau Leadership lessons from the prime minister of Canada (32) test

Daniel J. Watts: To accomplish great things, you need to "let the paint dry" - test

• Alexa Meade Your body is my canvas (34) test
• Alyssa Monks How loss helped one artist find beauty in imperfection (23) test
• Alex Rosenthal The Artists | Think Like A Coder, Ep 5 (21) test
• Raghava KK My 5 lives as an artist (20) test
• Ricardo Semler How to run a company with (almost) no rules (19) test

Daniel Kahneman: The riddle of experience vs. memory - test

• The TED Interview Daniel Kahneman wants you to doubt yourself. Here's why (47) test
• Dan Gilbert The surprising science of happiness (41) test
• Matt Killingsworth Want to be happier? Stay in the moment (41) test
• Nancy Etcoff Happiness and its surprises (39) test
• Emily Esfahani Smith There's more to life than being happy (38) test

Daniel Kish: How I use sonar to navigate the world - test

• Andrew Leland Blindness isn't a tragic binary -- it's a rich spectrum (40) test
• Scott Dinsmore How to find work you love (31) test
• Margaret Heffernan The dangers of willful blindness (30) test
• Sharon Terry Science didn't understand my kids' rare disease until I decided to study it (29) test
• Elizabeth Gilbert It's OK to feel overwhelmed. Here's what to do next (29) test

Daniel Kraft: A better way to harvest bone marrow - test

• Melody Smith How bones make blood (54) test
• Craig A. Kohn What are stem cells? (42) test
• Molly Stevens A new way to grow bone (40) test
• Susan Lim Transplant cells, not organs (38) test
• Jen Gunter Why healthy bones are about so much more than milk (37) test

Daniel Kraft: How COVID-19 transformed the future of medicine - test

• Matthias Müllenbeck What if we paid doctors to keep people healthy? (48) test
• Rebecca Onie What Americans agree on when it comes to health (46) test
• Alanna Shaikh Why COVID-19 is hitting us now -- and how to prepare for the next outbreak (45) test
• Shweta Narayan It's impossible to have healthy people on a sick planet (42) test
• Eric Dishman Health care should be a team sport (41) test

Daniel Kraft: Medicine's future? There's an app for that - test

• Daniel Kraft How COVID-19 transformed the future of medicine (39) test
• Daniel Kraft The pharmacy of the future? Personalized pills, 3D printed at home (36) test
• Alan Russell The potential of regenerative medicine (34) test
• Nabiha Saklayen Could you recover from illness ... using your own stem cells? (33) test
• Matthias Müllenbeck What if we paid doctors to keep people healthy? (33) test

Daniel Kraft: The pharmacy of the future? Personalized pills, 3D printed at home - test

• Daniel Kraft Medicine's future? There's an app for that (36) test
• Kiah Williams You shouldn't have to choose between filling your prescriptions and paying bills (34) test
• Daniel Kraft How COVID-19 transformed the future of medicine (29) test
• Russ Altman What really happens when you mix medications? (24) test
• Matthias Müllenbeck What if we paid doctors to keep people healthy? (24) test

Daniel L. Schacter: Are all of your memories real? - test

• Elizabeth Loftus How reliable is your memory? (38) test
• Alison Ledgerwood A simple trick to improve positive thinking (33) test
• Pau Aleikum Garcia Can AI preserve your most precious memories? (31) test
• Jay Van Bavel and Dominic Packer The sibling rivalry that divided a town (31) test
• Hector Lanz How do focus groups work? (26) test

Daniel Levitin: How to stay calm when you know you'll be stressed - test

• The TED Interview Daniel Kahneman wants you to doubt yourself. Here's why (33) test
• Lucy Hone 3 secrets of resilient people (33) test
• Ari Wallach 3 ways to plan for the (very) long term (29) test
• Ricardo Semler How to run a company with (almost) no rules (28) test
• Roger Stein A bold new way to fund drug research (27) test

Daniel Libeskind: 17 words of architectural inspiration - test

• Ole Scheeren Why great architecture should tell a story (46) test
• Mark Raymond Victims of the city (41) test
• Ma Yansong Urban architecture inspired by mountains, clouds and volcanoes (35) test
• Thom Mayne How architecture can connect us (35) test
• Marc Kushner Why the buildings of the future will be shaped by ... you (35) test

Daniel Lismore: My life as a work of art - test

• Philip Rosedale Life in Second Life (46) test
• Scott Dinsmore How to find work you love (44) test
• Yvonne van Amerongen The "dementia village" that's redefining elder care (44) test
• Gus Worland Is someone you love suffering in silence? Here's what to do (43) test
• Uldus Bakhtiozina Portraits that transform people into whatever they want to be (42) test

Daniel Lubetzky: Why the world needs more builders — and less "us vs. them" - test

• Amjad Masad How AI can help you turn an idea into the next great app (27) test
• Mary Robinson Why climate change is a threat to human rights (26) test
• Will MacAskill What are the most important moral problems of our time? (26) test
• Hugh Evans What does it mean to be a citizen of the world? (25) test
• Theo E.J. Wilson A black man goes undercover in the alt-right (25) test

Daniel M. Abrams: Why are some people left-handed? - test

• Elizabeth Waters The left brain vs. right brain myth (27) test
• Anna Post How to set the table (24) test
• Leo Q. Wan Why are human bodies asymmetrical? (21) test
• Rory Bremner A one-man world summit (21) test
• Jonathan Haidt Can a divided America heal? (20) test

Daniel Nickrent: Why does this flower smell like a dead body? - test

• Jonathan Drori Why we're storing billions of seeds (24) test
• Jonathan Drori The beautiful tricks of flowers (19) test
• Hélène Morlon and Anna Papadopoulou How we can detect pretty much anything (15) test
• Jill Farrant How we can make crops survive without water (15) test
• Luka Seamus Wright These animals are also plants ... wait, what? (15) test

Daniel Pauly: The ocean's shifting baseline - test

• Enric Sala Glimpses of a pristine ocean (41) test
• Jeremy Jackson How we wrecked the ocean (41) test
• Paul Greenberg The four fish we're overeating -- and what to eat instead (40) test
• Jackie Savitz Save the oceans, feed the world! (39) test
• Mike Velings The case for fish farming (36) test

Daniel Schnitzer: Inventing is the easy part. Marketing takes work - test

• Rose M. Mutiso How to bring affordable, sustainable electricity to Africa (48) test
• DeAndrea Salvador How we can make energy more affordable for low-income families (46) test
• Sheila Ngozi Oparaocha The missing piece of the clean energy transition (43) test
• Jordan Wirfs-Brock The four things you need to know about the energy you use (43) test
• TED Countdown How do we get the world off fossil fuels quickly and fairly? (39) test

Daniel Sperling and Gil Tal: The surprisingly long history of electric cars - test

• Cynthia Williams The secret perks of driving electric (42) test
• Shai Agassi A new ecosystem for electric cars (39) test
• Eleanor Nelsen How do fish make electricity? (35) test
• TED-Ed What's the best fuel for your car? (34) test
• Freeman H. Shen A future with fewer cars (31) test

Daniel Streicker: What vaccinating vampire bats can teach us about pandemics - test

• Emma Teeling The secret of the bat genome (35) test
• Alex Rosenthal When is a pandemic over? (33) test
• Joe DeRisi Solving medical mysteries (33) test
• Bruce Aylward Humanity vs. Ebola. How we could win a terrifying war (33) test
• Arinjay Banerjee Why bats don't get sick (31) test

Daniel Suarez: The kill decision shouldn't belong to a robot - test

• Erika Gregory The world doesn't need more nuclear weapons (27) test
• Guy-Philippe Goldstein How cyberattacks threaten real-world peace (26) test
• Lian Pin Koh A drone's-eye view of conservation (24) test
• Emma Belcher Nuclear threat and the war in Ukraine (24) test
• Alexandr Wang War, AI and the new global arms race (24) test

Daniel Susskind: 3 myths about the future of work (and why they're not true) - test

• David Lee Why jobs of the future won't feel like work (41) test
• Sougwen Chung Why I draw with robots (40) test
• Barry Schwartz The way we think about work is broken (39) test
• Nick Bostrom What happens when our computers get smarter than we are? (37) test
• Garry Kasparov Don't fear intelligent machines. Work with them (37) test

Daniel Tammet: Different ways of knowing - test

• John Koenig Beautiful new words to describe obscure emotions (33) test
• Elizabeth Stordeur Pryor Why it's so hard to talk about the N-word (30) test
• Celeste Headlee 10 ways to have a better conversation (30) test
• Erin McKean Go ahead, make up new words! (29) test
• Elif Shafak The revolutionary power of diverse thought (28) test

Daniel Wolpert: The real reason for brains - test

• Miguel Nicolelis A monkey that controls a robot with its thoughts. No, really. (35) test
• Jeff Hawkins How brain science will change computing (34) test
• Michael Merzenich Growing evidence of brain plasticity (33) test
• Anil Seth Your brain hallucinates your conscious reality (33) test
• Miguel Nicolelis Brain-to-brain communication has arrived. How we did it (32) test

Daniela Rus: How AI will step off the screen and into the real world - test

• Fei-Fei Li With spatial intelligence, AI will understand the real world (37) test
• Emma Hart Self-assembling robots and the potential of artificial evolution (35) test
• Jeff Dean AI isn't as smart as you think -- but it could be (34) test
• Catie Cuan Next up for AI? Dancing robots (32) test
• Cynthia Breazeal The rise of personal robots (32) test

Daniele Quercia: Happy maps - test

• Scott Dinsmore How to find work you love (30) test
• Tom Hulme What can we learn from shortcuts? (28) test
• Helen Marriage Public art that turns cities into playgrounds of the imagination (27) test
• Kent Larson Brilliant designs to fit more people in every city (27) test
• Tanya Menon The secret to great opportunities? The person you haven't met yet (26) test

Daniella Ballou-Aares: How business leaders can renew democracy - test

• Yordanos Eyoel How to build a global pro-democracy movement (40) test
• Michael Porter The case for letting business solve social problems (36) test
• Leticia Gasca Una nueva manera de hablar del fracaso en los negocios (35) test
• Takis S. Pappas The rise of modern populism (35) test
• Timothy Snyder Is democracy doomed? The global fight for our future (35) test

Danielle Allen: An ethical plan for ending the pandemic and restarting the economy - test

• Bill Gates How we must respond to the coronavirus pandemic (57) test
• Joia Mukherjee How to quickly scale up contact tracing across the US (46) test
• Georges C. Benjamin The secret weapon against pandemics (44) test
• The TED Interview David Brooks on political healing (43) test
• Nick Turner and Whitney Pennington Rodgers How to fix two of the most broken systems in the US (43) test

Danielle Citron: How deepfakes undermine truth and threaten democracy - test

• Sam Gregory When AI can fake reality, who can you trust? (37) test
• Yvette Alberdingk Thijm The power of citizen video to create undeniable truths (26) test
• Sinan Aral How we can protect truth in the age of misinformation (25) test
• Yasmin Green How technology can fight extremism and online harassment (24) test
• Ashley Judd How online abuse of women has spiraled out of control (24) test

Danielle Feinberg: The magic ingredient that brings Pixar movies to life - test

• Rogier van der Heide Why light needs darkness (34) test
• Kate Messner How to build a fictional world (32) test
• Beau Lotto Optical illusions show how we see (31) test
• David Korins 3 ways to create a space that moves you, from a Broadway set designer (30) test
• Ramesh Raskar Imaging at a trillion frames per second (30) test

Danielle N. Lee: How hip-hop helps us understand science - test

• Michael Shermer Why people believe weird things (27) test
• Beau Lotto + Amy O'Toole Science is for everyone, kids included (27) test
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Dave Brain: What a planet needs to sustain life - test

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Dave Eggers: My wish Once Upon a School - test

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Dave Isay: Everyone around you has a story the world needs to hear - test

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Dave Meslin: The antidote to apathy - test

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Dave Sivaprasad: Mangroves, storm walls and other ways to protect coasts from climate change - test

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• Jonathan Foley The climate solutions worth funding — now (31) test
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Dave Troy: Social maps that reveal a city's intersections — and separations - test

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Dave deBronkart: Meet e-Patient Dave - test

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David Agus: A new strategy in the war on cancer - test

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David Anderson: Your brain is more than a bag of chemicals - test

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David Andrew Quist: Could fungi actually be the key to humanity's survival? - test

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David Asch: Why it's so hard to make healthy decisions - test

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• Mitchell Katz What the US health care system assumes about you (37) test
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David Autor: Will automation take away all our jobs? - test

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David Biello: 1816 The year with no summer - test

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David Biello: How long will human impacts last? - test

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David Biello: How the compass unlocked the world - test

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David Burkus: A simple way to inspire your team - test

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David Byrne: How architecture helped music evolve - test

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David Cage: How video games turn players into storytellers - test

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David Camarillo: Why helmets don't prevent concussions -- and what might - test

• Clifford Robbins What happens when you have a concussion? (46) test
• Chris Nowinski Can I have your brain? The quest for truth on concussions and CTE (43) test
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• Nancy Kanwisher A neural portrait of the human mind (40) test

David Cameron: The next age of government - test

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• Ray Dalio What coronavirus means for the global economy (39) test
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David Carson: Design and discovery - test

• Scott Dinsmore How to find work you love (45) test
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• Margaret Gould Stewart How giant websites design for you (and a billion others, too) (43) test

David Casarett: A doctor's case for medical marijuana - test

• Rebecca Onie What if our health care system kept us healthy? (33) test
• Dave deBronkart Meet e-Patient Dave (33) test
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• Anees Bahji Is marijuana bad for your brain? (32) test
• Laurel Braitman The mental health benefits of storytelling for health care workers (30) test

David Chalmers: How do you explain consciousness? - test

• John Searle Our shared condition -- consciousness (63) test
• Dan Dennett The illusion of consciousness (46) test
• Anil Seth Your brain hallucinates your conscious reality (36) test
• Michael S. A. Graziano What is consciousness? (35) test
• Simon Lewis Don't take consciousness for granted (31) test

David Christian: The history of our world in 18 minutes - test

• Stephen Hawking Questioning the universe (40) test
• Sean Carroll Distant time and the hint of a multiverse (39) test
• Martin Rees Is this our final century? (38) test
• Katie Mack Life-altering questions about the end of the universe (35) test
• Brian Cox CERN's supercollider (35) test

David Damberger: What happens when an NGO admits failure - test

• Tiffani Ashley Bell How one small idea led to $1 million of paid water bills (37) test
• Fahad Al-Attiya A country with no water (34) test
• Jacqueline Novogratz Invest in Africa's own solutions (33) test
• Anupam Mishra The ancient ingenuity of water harvesting (33) test
• Nick Turner and Whitney Pennington Rodgers How to fix two of the most broken systems in the US (33) test

David Deutsch: A new way to explain explanation - test

• The TED Interview David Deutsch on the infinite reach of knowledge (27) test
• Steven Pinker Is the world getting better or worse? A look at the numbers (24) test
• Siska De Baerdemaeker Science vs. Pseudoscience (24) test
• David Deutsch After billions of years of monotony, the universe is waking up (24) test
• David Deutsch Chemical scum that dream of distant quasars (22) test

David Deutsch: After billions of years of monotony, the universe is waking up - test

• The TED Interview David Deutsch on the infinite reach of knowledge (43) test
• Stephen Hawking Questioning the universe (37) test
• David Deutsch Chemical scum that dream of distant quasars (33) test
• Martin Rees Is this our final century? (30) test
• Sean Carroll Distant time and the hint of a multiverse (30) test

David Deutsch: Chemical scum that dream of distant quasars - test

• The TED Interview David Deutsch on the infinite reach of knowledge (41) test
• Stephen Hawking Questioning the universe (39) test
• Katie Mack Life-altering questions about the end of the universe (38) test
• George Smoot The design of the universe (37) test
• Risa Wechsler The search for dark matter -- and what we've found so far (35) test

David Dunning: Why incompetent people think they're amazing - test

• Robin Kramer Are you really as good at something as you think? (47) test
• Erez Yoeli How to motivate people to do good for others (37) test
• Dan Ariely What makes us feel good about our work? (35) test
• Justin Trudeau Leadership lessons from the prime minister of Canada (34) test
• Keith Payne The psychology of inequality and political division (34) test

David Eagleman: Can we create new senses for humans? - test

• Anil Seth How your brain invents your "self" (41) test
• Anil Seth Your brain hallucinates your conscious reality (40) test
• Tom Oxley A brain implant that turns your thoughts into text (37) test
• Yara Shahidi and Anil Seth What makes you “you”? An actor and a neuroscientist answer (37) test
• Jeff Hawkins How brain science will change computing (36) test

David Epstein: Are athletes really getting faster, better, stronger? - test

• Aimee Mullins Changing my legs - and my mindset (28) test
• Kate Ackerman What girls and women in sports need to unlock their potential (25) test
• Tim Nevius The exploitation of US college athletes (24) test
• Nancy N. Chen The inaccurate link between body ideals and health (24) test
• Kate Fagan Why people love watching sports (23) test

David Epstein: Why specializing early doesn't always mean career success - test

• Sarah Aviram Does more freedom at work mean more fulfillment? (33) test
• Sarah Ellis and Helen Tupper The best career path isn't always a straight line (33) test
• Andrew McAfee Are droids taking our jobs? (32) test
• Charles Leadbeater Education innovation in the slums (31) test
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David Finnigan: A controversial play — and what it taught me about the psychology of climate - test

• Sophia Kianni Language shouldn't be a barrier to climate action (54) test
• Al Gore, Gloria Kasang Bulus, Nana Firman, Ximena Loría and Tim Guinee Climate change is our reality. Here's how we're taking action (54) test
• John Marshall 3 strategies for effectively talking about climate change (52) test
• Christiana Figueres and Chris Anderson How we can turn the tide on climate (51) test
• Britt Wray How climate change affects your mental health (51) test

David Gallo: Deep ocean mysteries and wonders - test

• David Gallo Life in the deep oceans (53) test
• Sylvia Earle My wish Protect our oceans (52) test
• Scott Gass How big is the ocean? (49) test
• Robert Ballard The astonishing hidden world of the deep ocean (43) test
• Victor Vescovo What's at the bottom of the ocean -- and how we're getting there (42) test

David Gallo: Life in the deep oceans - test

• David Gallo Deep ocean mysteries and wonders (53) test
• Sylvia Earle My wish Protect our oceans (40) test
• Mike deGruy Hooked by an octopus (38) test
• Robert Ballard The astonishing hidden world of the deep ocean (38) test
• Alan Jamieson Meet the mysterious "monsters" of the deep sea (38) test

David Gallo: Underwater astonishments - test

• David Gallo Deep ocean mysteries and wonders (32) test
• Roger Hanlon The amazing brains and morphing skin of octopuses and other cephalopods (32) test
• Mike deGruy Hooked by an octopus (28) test
• Alan Jamieson Meet the mysterious "monsters" of the deep sea (24) test
• Greg Gage How octopuses battle each other (23) test

David Grady: How to save the world (or at least yourself) from bad meetings - test

• Cindy Solomon 5 tips for dealing with meeting overload (42) test
• Jason Fried Why work doesn't happen at work (41) test
• Ricardo Semler How to run a company with (almost) no rules (33) test
• Anjali Sud and Stephanie Mehta How great leaders take on uncertainty (32) test
• Scott Dinsmore How to find work you love (31) test

David Griffin: How photography connects us - test

• Brian Skerry The ocean's glory -- and horror (32) test
• Giles Duley When a reporter becomes the story (31) test
• Stephen Wilkes The passing of time, caught in a single photo (28) test
• George Monbiot The new political story that could change everything (26) test
• Peter Gabriel Fight injustice with raw video (25) test

David Gruber and Shane Gero: How advanced is whale talk? - test

• David Gruber Can we learn to talk to sperm whales? (39) test
• Stephanie Sardelis Why do whales sing? (30) test
• Asha de Vos Why you should care about whale poo (29) test
• John Amory How a male contraceptive pill could work (26) test
• Peter Tyack The intriguing sound of marine mammals (26) test

David Gruber: Can we learn to talk to sperm whales? - test

• David Gruber and Shane Gero How advanced is whale talk? (39) test
• Asha de Vos Why you should care about whale poo (31) test
• Peter Tyack The intriguing sound of marine mammals (30) test
• Stephanie Sardelis Why do whales sing? (30) test
• Karen Bakker Could an orca give a TED Talk? (26) test

David Gruber: Glow-in-the-dark sharks and other stunning sea creatures - test

• Edith Widder Glowing life in an underwater world (39) test
• Colm Kelleher How we see color (35) test
• Edith Widder The weird, wonderful world of bioluminescence (33) test
• Victoria Hwang What is the rarest color in nature? (33) test
• Beau Lotto Optical illusions show how we see (31) test

David Hanson: Robots that "show emotion" - test

• Kate Darling Why we have an emotional connection to robots (37) test
• Ali Kashani A friendly, autonomous robot that delivers your food (36) test
• Catie Cuan Next up for AI? Dancing robots (35) test
• Cynthia Breazeal The rise of personal robots (31) test
• Rodney Brooks Robots will invade our lives (29) test

David Heymann: What we do (and don't) know about the coronavirus - test

• Seth Berkley The quest for the coronavirus vaccine (50) test
• Alanna Shaikh Why COVID-19 is hitting us now -- and how to prepare for the next outbreak (46) test
• Bruce Aylward Humanity vs. Ebola. How we could win a terrifying war (46) test
• Maria Van Kerkhove How to end the pandemic -- and prepare for the next (44) test
• Bill Gates How we must respond to the coronavirus pandemic (44) test

David Hoffman: Sputnik mania - test

• Jeff Steers Who won the space race? (33) test
• Burt Rutan The real future of space exploration (20) test
• Peter Beck Small rockets are the next space revolution (20) test
• David Hoffman What happens when you lose everything (19) test
• Bill Stone Inside the world's deepest caves (19) test

David Hoffman: What happens when you lose everything - test

• Heather Lanier "Good" and "bad" are incomplete stories we tell ourselves (31) test
• Ava DuVernay How film changes the way we see the world (28) test
• Jeff Skoll My journey into movies that matter (28) test
• Martin Villeneuve How I made an impossible film (24) test
• Morgan Spurlock The greatest TED Talk ever sold (23) test

David Holt: The joyful tradition of mountain music - test

• Vernā Myers How to overcome our biases? Walk boldly toward them (25) test
• Ethan Hawke Give yourself permission to be creative (25) test
• Chieh Huang Confessions of a recovering micromanager (25) test
• Serena Williams and Gayle King On tennis, love and motherhood (24) test
• Neil Pasricha The 3 A's of awesome (24) test

David Ian Howe: A brief history of dogs - test

• Alexandra Horowitz Why all dogs are good dogs (33) test
• Gregory Berns What emotions look like in a dog's brain (32) test
• Laurel Braitman Depressed dogs, cats with OCD — what animal madness means for us humans (23) test
• Zeresenay Alemseged The search for humanity's roots (23) test
• Megan Parker How dogs help with conservation efforts (23) test

David Ikard: The real story of Rosa Parks -- and why we need to confront myths about Black history - test

• Riché D. Richardson The hidden life of Rosa Parks (35) test
• John Lewis and Bryan Stevenson The fight for civil rights and freedom (30) test
• John Biewen The lie that invented racism (27) test
• Curtis Austin The real story of the Black Panther Party (25) test
• Christian Picciolini My descent into America's neo-Nazi movement -- and how I got out (25) test

David J. Bier: How guest worker visas could transform the US immigration system - test

• Will Hurd A wall won't solve America's border problems (37) test
• Erika Pinheiro What's really happening at the US-Mexico border -- and how we can do better (30) test
• Melanie Nezer The fundamental right to seek asylum (29) test
• Jon Lowenstein Family, hope and resilience on the migrant trail (27) test
• Ai-jen Poo The work that makes all other work possible (24) test

David J. Malan: What's an algorithm? - test

• Scott Dinsmore How to find work you love (47) test
• Emily Balcetis Why some people find exercise harder than others (41) test
• Tanya Menon The secret to great opportunities? The person you haven't met yet (40) test
• Linus Torvalds The mind behind Linux (40) test
• The TED Interview David Brooks on political healing (39) test

David Katz: The surprising solution to ocean plastic - test

• Dianna Cohen Tough truths about plastic pollution (55) test
• Andrew Forrest A radical plan to end plastic waste (52) test
• Sarah Dudas Microplastics are everywhere -- but we can do something about them (51) test
• Haaziq Kazi A 13-year-old's plan for removing plastic from the oceans (45) test
• Morgan Vague These bacteria eat plastic (44) test

David Keith: A critical look at geoengineering against climate change - test

• Jonathan Foley The climate solutions worth funding — now (43) test
• Kelly Wanser Emergency medicine for our climate fever (39) test
• Alice Bows-Larkin Climate change is happening. Here's how we adapt (39) test
• Luisa Neubauer Why you should be a climate activist (36) test
• Gavin McCormick Tracking the whole world's carbon emissions -- with satellites and AI (35) test

David Kelley: How to build your creative confidence - test

• Ricardo Semler How to run a company with (almost) no rules (45) test
• Scott Dinsmore How to find work you love (44) test
• Brian S. Lowery and Kylan Gibbs What makes us human in the age of AI? A psychologist and a technologist answer (40) test
• Linus Torvalds The mind behind Linux (40) test
• Michael Specter The danger of science denial (39) test

David Kelley: Human-centered design - test

• Margaret Gould Stewart How giant websites design for you (and a billion others, too) (44) test
• Paola Antonelli Treat design as art (42) test
• Ricardo Semler How to run a company with (almost) no rules (40) test
• David Carson Design and discovery (38) test
• Rob Forbes Ways of seeing (38) test

David Kessler: How to find meaning after loss - test

• Nina Westbrook How to support yourself (and others) through grief (56) test
• Hui-wen Sato How grief helped me become a better caregiver (42) test
• Nora McInerny We don't "move on" from grief. We move forward with it (38) test
• Caroline Catlin Why I photograph the quiet moments of grief and loss (36) test
• The TED Interview Elizabeth Gilbert shows up for ... everything (34) test

David Korins: 3 ways to create a space that moves you, from a Broadway set designer - test

• Beau Lotto Optical illusions show how we see (34) test
• Cleo Wade Want to change the world? Start by being brave enough to care (32) test
• John Cary How architecture can create dignity for all (31) test
• Rogier van der Heide Why light needs darkness (31) test
• Jehane Noujaim My wish A global day of film (31) test

David Kwong: Magic and wonder in the age of AI - test

• Apollo Robbins The art of misdirection (30) test
• Keith Barry Brain magic (24) test
• Todd Kuiken A prosthetic arm that "feels" (23) test
• Beau Lotto Optical illusions show how we see (21) test
• Simon Anholt Which country does the most good for the world? (20) test

David Kwong: Two nerdy obsessions meet -- and it's magic - test

• Scott Kim The art of puzzles (28) test
• Alex Rosenthal The joyful, perplexing world of puzzle hunts (26) test
• Amanda Williams Why I turned Chicago's abandoned homes into art (23) test
• Neil Harbisson I listen to color (22) test
• Rives The 4 a.m. mystery (19) test

David L. Hu: Do larger animals take longer to pee? - test

• Heba Shaheed Is it bad to hold your pee? (34) test
• Saad Bhamla The fascinating physics of insect pee (15) test
• Jen Gunter Why you don't need 8 glasses of water a day (14) test
• Mia Nacamulli What would happen if you didn't drink water? (13) test
• Kate Slabosky The three different ways mammals give birth (13) test

David Lammy and Justin J. Pearson: How to be a leader for climate justice - test

• Vanessa Nakate and Mary Robinson The global opportunity to accelerate Africa's sustainable future (52) test
• David Lammy Climate justice can't happen without racial justice (51) test
• John Marshall 3 strategies for effectively talking about climate change (51) test
• Scott Dinsmore How to find work you love (49) test
• Seth Godin The tribes we lead (48) test

David Lammy: Climate justice can't happen without racial justice - test

• Alicia Garza, Patrisse Cullors and Opal Tometi An interview with the founders of Black Lives Matter (51) test
• David Lammy and Justin J. Pearson How to be a leader for climate justice (51) test
• Sophia Kianni Language shouldn't be a barrier to climate action (47) test
• Al Gore, Gloria Kasang Bulus, Nana Firman, Ximena Loría and Tim Guinee Climate change is our reality. Here's how we're taking action (47) test
• Christiana Figueres and Chris Anderson How we can turn the tide on climate (47) test

David Lang: Let's protect the oceans like national parks - test

• Seth Godin The tribes we lead (46) test
• Wael Ghonim Inside the Egyptian revolution (45) test
• Scott Dinsmore How to find work you love (44) test
• The TED Interview Bill Gates looks to the future (44) test
• Ricardo Semler How to run a company with (almost) no rules (43) test

David Lang: My underwater robot - test

• Massimo Banzi How Arduino is open-sourcing imagination (29) test
• Ken Goldberg 4 lessons from robots about being human (26) test
• Cameron Sinclair My wish A call for open-source architecture (25) test
• Francesco Sauro Deep under the Earth's surface, discovering beauty and science (25) test
• Cynthia Breazeal The rise of personal robots (24) test

David Lee: Why jobs of the future won't feel like work - test

• Roy Bahat and Bryn Freedman How do we find dignity at work? (58) test
• Scott Dinsmore How to find work you love (56) test
• Jason Fried Why work doesn't happen at work (53) test
• Debbie Lovich 3 tips for leaders to get the future of work right (53) test
• WorkLife with Adam Grant When work takes over your life (51) test

David Lindell: A camera that can see around corners - test

• Ramesh Raskar Imaging at a trillion frames per second (55) test
• Mary Lou Jepsen How we can use light to see deep inside our bodies and brains (39) test
• Lucianne Walkowicz Light waves, visible and invisible (39) test
• Colm Kelleher Is light a particle or a wave? (38) test
• Harald Haas Wireless data from every light bulb (38) test

David Logan: Tribal leadership - test

• Scott Dinsmore How to find work you love (47) test
• Seth Godin The tribes we lead (44) test
• Robert Reffkin 5 ways to create stronger connections (41) test
• Wael Ghonim Inside the Egyptian revolution (41) test
• Tanya Menon The secret to great opportunities? The person you haven't met yet (41) test

David Lunney: The life cycle of a neutron star - test

• Garik Israelian How spectroscopy could reveal alien life (31) test
• Tabetha Boyajian The most mysterious star in the universe (30) test
• Enrico Ramirez-Ruiz Your body was forged in the spectacular death of stars (30) test
• Lucianne Walkowicz Finding planets around other stars (28) test
• David Lunney Where does gold come from? (27) test

David Lunney: Where does gold come from? - test

• Dennis Wildfogel What is the universe made of? (38) test
• Lyla Latif The true cost of gold (37) test
• Enrico Ramirez-Ruiz Your body was forged in the spectacular death of stars (36) test
• Jeff Bezos The electricity metaphor for the web's future (28) test
• David Lunney The life cycle of a neutron star (27) test

David M. Howard: Can we recreate the voice of a 3,000-year-old mummy? - test

• Rébecca Kleinberger Why you don't like the sound of your own voice (55) test
• Rupal Patel Synthetic voices, as unique as fingerprints (50) test
• Beardyman The polyphonic me (41) test
• Emma Rodero Cómo darle credibilidad a tu voz (41) test
• Roger Ebert Remaking my voice (40) test

David MacKay: A reality check on renewables - test

• TED-Ed How much land does it take to power the world? (43) test
• TED Countdown How do we get the world off fossil fuels quickly and fairly? (42) test
• TED-Ed How much electricity does it take to power the world? (38) test
• Varun Sivaram How India could pull off the world's most ambitious energy transition (38) test
• Rose M. Mutiso How to bring affordable, sustainable electricity to Africa (36) test

David Macaulay: An illustrated journey through Rome - test

• Bjarke Ingels 3 warp-speed architecture tales (23) test
• Chip Kidd Designing books is no laughing matter. OK, it is. (23) test
• Arthur Ganson Moving sculpture (22) test
• Brian Dettmer Old books reborn as art (20) test
• Paul Bennett Design is in the details (20) test

David McCandless: The beauty of data visualization - test

• Giorgia Lupi How we can find ourselves in data (45) test
• Tim Berners-Lee The next web (45) test
• Kasia Chmielinski Why AI needs a "nutrition label" (44) test
• Kenneth Cukier Big data is better data (43) test
• Alessandro Acquisti What will a future without secrets look like? (41) test

David McWilliams: The power of unconventional thinking - test

• Scott Dinsmore How to find work you love (36) test
• Gus Worland Is someone you love suffering in silence? Here's what to do (36) test
• Ricardo Semler How to run a company with (almost) no rules (35) test
• Jehane Noujaim My wish A global day of film (35) test
• Wael Ghonim Inside the Egyptian revolution (35) test

David Merrill: Toy tiles that talk to each other - test

• Abe Davis New video technology that reveals an object's hidden properties (36) test
• David Perry Are games better than life? (35) test
• Kris Alexander How video games can level up the way you learn (32) test
• James Patten The best computer interface? Maybe ... your hands (31) test
• Supasorn Suwajanakorn Fake videos of real people -- and how to spot them (30) test

David Miliband: The refugee crisis is a test of our character - test

• Alexander Betts Our refugee system is failing. Here's how we can fix it (58) test
• Benedetta Berti and Evelien Borgman What does it mean to be a refugee? (56) test
• Melissa Fleming Let's help refugees thrive, not just survive (55) test
• Melanie Nezer The fundamental right to seek asylum (52) test
• António Guterres Refugees have the right to be protected (50) test

David Perry: Are games better than life? - test

• Kris Alexander How video games can level up the way you learn (63) test
• Gabe Zichermann How games make kids smarter (60) test
• Jane McGonigal Gaming can make a better world (57) test
• Daphne Bavelier Your brain on video games (55) test
• Noah Raford How gaming can be a force for good (54) test

David Peterson: Why language is humanity's greatest invention - test

• Poet Ali The language of being human (61) test
• John McWhorter 4 reasons to learn a new language (59) test
• Lýdia Machová The secrets of learning a new language (58) test
• Archie Crowley Language around gender and identity evolves (and always has) (55) test
• Mia Nacamulli The benefits of a bilingual brain (55) test

David Pizarro: The strange politics of disgust - test

• Jonathan Haidt Can a divided America heal? (45) test
• Paul Bloom Can prejudice ever be a good thing? (35) test
• The TED Interview David Brooks on political healing (31) test
• Jonathan Haidt The moral roots of liberals and conservatives (30) test
• Paul Hudson and Lindsay Levin Leadership in the age of AI (30) test

David Pogue: 10 top time-saving tech tips - test

• David Pogue Cool tricks your phone can do (25) test
• David Pogue Simplicity sells (22) test
• Phnam Bagley Gourmet food for the final frontier (22) test
• Amber Case We are all cyborgs now (21) test
• Imogen Malpas Can we see time? Exploring synesthesia (21) test

David Pogue: Cool tricks your phone can do - test

• Malte Spitz Your phone company is watching (45) test
• Jan Chipchase The anthropology of mobile phones (36) test
• Jamais Cascio Tools for a better world (33) test
• Sophie Andrews The best way to help is often just to listen (33) test
• Manoush Zomorodi How boredom can lead to your most brilliant ideas (32) test

David Pogue: Simplicity sells - test

• Dan Bricklin Meet the inventor of the electronic spreadsheet (28) test
• Ricardo Semler How to run a company with (almost) no rules (27) test
• Clay Shirky How the Internet will (one day) transform government (26) test
• Julian Treasure How to speak so that people want to listen (26) test
• Elizabeth Stordeur Pryor Why it's so hard to talk about the N-word (26) test

David Pogue: The music wars - test

• Mark Ronson How sampling transformed music (29) test
• Michael Tilson Thomas Music and emotion through time (29) test
• Crush Club "My Man" / "Bohanna" / "We Dance" (29) test
• Joey Alexander An 11-year-old prodigy performs old-school jazz (28) test
• David Byrne How architecture helped music evolve (26) test

David Puts: To find your perfect mate, think like an evolutionist - test

• Alyson McGregor Why medicine often has dangerous side effects for women (36) test
• Karen Gurney The truth about faking orgasms (35) test
• Carin Bondar The birds and the bees are just the beginning (35) test
• Christopher Ryan Are we designed to be sexual omnivores? (35) test
• Jackson Katz Violence against women -- it's a men's issue (35) test

David Puttnam: Does the media have a "duty of care"? - test

• Bret Stephens and Yordanos Eyoel Democracy requires disagreement. Here's how to do it better (29) test
• Sharmi Surianarain Caregiving is real work — let's treat it that way (27) test
• Eric Dishman Health care should be a team sport (27) test
• Sixto Cancel A foster care system where every child has a loving home (25) test
• Yaël Eisenstat Dear Facebook, this is how you're breaking democracy (25) test

David R. Dow: Lessons from death row inmates - test

• Lindy Lou Isonhood A juror's reflections on the death penalty (45) test
• Kelli Swazey Life that doesn't end with death (43) test
• Alison Killing There’s a better way to die, and architecture can help (43) test
• Bryan Stevenson We need to talk about an injustice (38) test
• Shreya Joshi What you can learn from people who disagree with you (37) test

David R. Flum: What does appendix pain feel like? - test

• Kathleen McAuliffe Do gut microbes control your personality? (19) test
• Melvin Sanicas What makes TB the world's most infectious killer? (18) test
• Giulia Enders The surprisingly charming science of your gut (17) test
• Leana Wen What your doctor won’t disclose (17) test
• Fatima AlZahra'a Alatraktchi To detect diseases earlier, let's speak bacteria's secret language (17) test

David R. Liu: Can we cure genetic diseases by rewriting DNA? - test

• Jennifer Doudna How CRISPR lets us edit our DNA (40) test
• Andrea M. Henle How CRISPR lets you edit DNA (38) test
• Dan Gibson How to build synthetic DNA and send it across the internet (32) test
• Craig Venter Watch me unveil "synthetic life" (32) test
• Sebastian Kraves The era of personal DNA testing is here (31) test

David R. Williams: How racism makes us sick - test

• Mary Bassett Why your doctor should care about social justice (37) test
• Megan Ming Francis We need to address the real roots of racial violence (37) test
• Wanda Irving How the US medical community fails Black mothers (35) test
• Sharif El-Mekki Reviving the legacy of the Black teaching tradition (35) test
• Charles M. Blow The case for a new Great Migration in the US (34) test

David Rockwell: A memorial at Ground Zero - test

• Theaster Gates How to revive a neighborhood with imagination, beauty and art (43) test
• Amanda Burden How public spaces make cities work (40) test
• Frank Gehry A master architect asks, Now what? (39) test
• Mark Raymond Victims of the city (38) test
• Paul Hudson and Lindsay Levin Leadership in the age of AI (38) test

David Rockwell: The hidden ways stairs shape your life - test

• Brian S. Lowery and Kylan Gibbs What makes us human in the age of AI? A psychologist and a technologist answer (23) test
• David Korins 3 ways to create a space that moves you, from a Broadway set designer (23) test
• Scott Dinsmore How to find work you love (23) test
• Linus Torvalds The mind behind Linux (22) test
• Seth Godin The tribes we lead (22) test

David Rothkopf: How fear drives American politics - test

• Wadah Khanfar A historic moment in the Arab world (38) test
• Edward Snowden Here's how we take back the Internet (38) test
• Marc Goodman A vision of crimes in the future (37) test
• Fields Wicker-Miurin Learning from leadership's missing manual (36) test
• Samantha Nutt The real harm of the global arms trade (36) test

David S. Rose: How to pitch to a VC - test

• Ricardo Semler How to run a company with (almost) no rules (32) test
• Kara Logan Berlin 3 ways to be a more effective fundraiser (32) test
• Seth Godin How to get your ideas to spread (31) test
• Nicholas Negroponte One Laptop per Child, two years on (30) test
• Bjorn Lomborg Global priorities bigger than climate change (30) test

David Schwartz: Not all scientific studies are created equal - test

• Jeff Leek and Lucy McGowan Can you spot the problem with these headlines? (Level 1) (39) test
• John Wilbanks Let's pool our medical data (35) test
• Robert Waldinger What makes a good life? Lessons from the longest study on happiness (35) test
• Robert Waldinger The secret to a happy life -- lessons from 8 decades of research (33) test
• Ben Goldacre What doctors don't know about the drugs they prescribe (31) test

David Sedlak: 4 ways we can avoid a catastrophic drought - test

• Lana Mazahreh 3 thoughtful ways to conserve water (78) test
• Rob Harmon How to keep rivers and streams flowing (75) test
• Balsher Singh Sidhu Are we running out of clean water? (73) test
• Kelsey Leonard Why lakes and rivers should have the same rights as humans (73) test
• Deepika Kurup A young scientist's quest for clean water (72) test

David Sengeh: The sore problem of prosthetic limbs - test

• Julius Maada Bio A vision for the future of Sierra Leone (24) test
• Aimee Mullins My 12 pairs of legs (19) test
• Zarlasht Halaimzai What it's like to be a war refugee (18) test
• Yvonne Aki-Sawyerr How to turn your dissatisfaction into action (18) test
• Samantha Nutt The real harm of the global arms trade (17) test

David Steindl-Rast: Want to be happy? Be grateful - test

• TED-Ed How to increase your happiness (83) test
• Herman Narula The transformative power of video games (36) test
• Kare Anderson Be an opportunity maker (30) test
• Elizabeth Gilbert It's OK to feel overwhelmed. Here's what to do next (29) test
• Wadah Khanfar A historic moment in the Arab world (29) test

David Titley: How the military fights climate change - test

• Vanessa Nakate and Mary Robinson The global opportunity to accelerate Africa's sustainable future (32) test
• Luisa Neubauer Why you should be a climate activist (32) test
• David Finnigan A controversial play — and what it taught me about the psychology of climate (32) test
• Sophia Kianni Language shouldn't be a barrier to climate action (31) test
• Britt Wray How climate change affects your mental health (31) test

David Wallace-Wells: How we could change the planet's climate future - test

• Luisa Neubauer Why you should be a climate activist (46) test
• Jonathan Foley The climate solutions worth funding — now (45) test
• Greta Thunberg The disarming case to act right now on climate change (44) test
• Britt Wray How climate change affects your mental health (43) test
• Mary Robinson Why climate change is a threat to human rights (42) test

David Wengrow: A new understanding of human history and the roots of inequality - test

• Vance Kite Urbanization and the evolution of cities across 10,000 years (38) test
• Spencer Wells A family tree for humanity (37) test
• Zeresenay Alemseged The search for humanity's roots (37) test
• Robert Muggah How to protect fast-growing cities from failing (34) test
• Lord Nicholas Stern The state of the climate — and what we might do about it (33) test

David Whyte: A lyrical bridge between past, present and future - test

• Anab Jain Why we need to imagine different futures (31) test
• His Holiness Pope Francis Why the only future worth building includes everyone (30) test
• Charlie Jane Anders Go ahead, dream about the future (30) test
• Shah Rukh Khan Thoughts on humanity, fame and love (29) test
• Meg Jay Essential questions to ask your future self (29) test

Dawn Landes: A song for my hero, the woman who rowed into a hurricane - test

• Roz Savage Why I'm rowing across the Pacific (30) test
• Ben Saunders Why did I ski to the North Pole? (21) test
• Dean Furness To overcome challenges, stop comparing yourself to others (21) test
• Tracy Edwards Stop being a bystander in your own life (20) test
• Pico Iyer The art of stillness (20) test

Dawn Lippert: Community investment is the missing piece of climate action - test

• Kevin Kelly Technology's epic story (37) test
• Ozawa Bineshi Albert Climate action needs new frontline leadership (36) test
• Gabriel Kra 5 promising factors propelling climate action (34) test
• Angela Mahecha Adrar The people who caused the climate crisis aren't the ones who will fix it (33) test
• Colette Pichon Battle Climate change will displace millions. Here's how we prepare (32) test

Dawn Maslar: The science of attraction - test

• Pere Estupinyà The science of sex (24) test
• Noel Bairey Merz The single biggest health threat women face (23) test
• Mary Ann Sieghart Why are women still taken less seriously than men? (22) test
• Eve Ensler Suddenly, my body (22) test
• Ashley Graham Plus-size? More like my size (22) test

Dawn Wacek: A librarian's case against overdue book fines - test

• Storybook Maze A street librarian's quest to bring books to everyone (38) test
• Chera Kowalski The critical role librarians play in the opioid crisis (33) test
• Michael Bierut How to design a library that makes kids want to read (33) test
• Brewster Kahle A free digital library (32) test
• Ricardo Semler How to run a company with (almost) no rules (27) test

Dayananda Saraswati: The profound journey of compassion - test

• Krista Tippett Reconnecting with compassion (44) test
• Joan Halifax Compassion and the true meaning of empathy (40) test
• Chade-Meng Tan Everyday compassion at Google (37) test
• Robert Thurman Expanding your circle of compassion (34) test
• James Forbes Compassion at the dinner table (28) test

Dayo Ogunyemi: Visions of Africa's future, from African filmmakers - test

• Euvin Naidoo Why invest in Africa (47) test
• George Ayittey Africa's cheetahs versus hippos (46) test
• Charles Robertson Africa's next boom (43) test
• Kevin Njabo How we can stop Africa's scientific brain drain (41) test
• Neil Turok My wish Find the next Einstein in Africa (41) test

DeAndrea Salvador: How we can make energy more affordable for low-income families - test

• Jordan Wirfs-Brock The four things you need to know about the energy you use (62) test
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Del Harvey: Protecting Twitter users (sometimes from themselves) - test

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Demis Hassabis: How AI is unlocking the secrets of nature and the universe - test

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Denise Herzing: Could we speak the language of dolphins? - test

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Derek Abbott: Should you trust unanimous decisions? - test

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Design Matters with Debbie Millman: Cheryl Strayed - test

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Design Matters: Brené Brown - test

• Conversations with People Who Hate Me The Trans Ban (50) test
• The TED Interview Susan Cain takes us into the mind of an introvert (47) test
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• Brené Brown The power of vulnerability (44) test

Desiree Akhavan: Why you should disappoint your parents - test

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Dessa: Can we choose to fall out of love? - test

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Devita Davison: How urban agriculture is transforming Detroit - test

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