[4:37] The origins of ballet - Jennifer Tortorello and Adrienne Westwood

[5:02] The otherworldly creatures in the ocean's deepest depths - Lidia Lins

[4:22] The Sun’s surprising movement across the sky - Gordon Williamson

[3:45] The paradox of value - Akshita Agarwal

[4:15] The poet who painted with his words - Geneviève Emy

[4:38] The psychology behind irrational decisions - Sara Garofalo

[5:09] The psychology of narcissism - W. Keith Campbell

[4:59] The race to sequence the human genome - Tien Nguyen

[4:41] The real story behind Archimedes’ Eureka! - Armand D'Angour

[4:53] The science of skin color - Angela Koine Flynn

[4:29] The science of snowflakes - Maruša Bradač

[4:16] The physics of the "hardest move" in ballet - Arleen Sugano

[5:41] The language of lying — Noah Zandan

[6:00] The wars that inspired Game of Thrones - Alex Gendler

[4:51] What would happen if you didn’t drink water? - Mia Nacamulli

[4:45] Why do women have periods?

[4:22] Why do your knuckles pop? - Eleanor Nelsen

[4:18] Why is biodiversity so important? - Kim Preshoff

[4:52] Why is Mount Everest so tall? - Michele Koppes

[3:52] Why is this painting so captivating? - James Earle and Christina Bozsik

[4:30] Why it’s so hard to cure HIV/AIDS - Janet Iwasa

[4:40] Why neutrinos matter - Sílvia Bravo Gallart

[5:44] Why do we love? A philosophical inquiry - Skye C. Cleary

[5:04] Why sitting is bad for you - Murat Dalkilinç

[4:25] Why tragedies are alluring - David E. Rivas

[4:20] Why wildfires are necessary - Jim Schulz

[4:36] Will future spacecraft fit in our pockets? - Dhonam Pemba

[4:09] Would you opt for a life with no pain? - Hayley Levitt and Bethany Rickwald

[5:31] 为什么永动机不能实现？

[5:33] 奶酪简史

[4:55] Would you sacrifice one person to save five? - Eleanor Nelsen

[4:16] Why the octopus brain is so extraordinary - Cláudio L. Guerra

[4:33] What Makes a Hero？

[5:01] Why do we have to wear sunscreen?

[4:48] Why do some people go bald? - Sarthak Sinha

[4:34] What would happen if you didn’t sleep? - Claudia Aguirre

[5:11] What’s the difference between a scientific law and theory? - Matt Anticole

[4:52] What's the difference between accuracy and precision? - Matt Anticole

[2:56] When to Use "Me," "Myself," and "I"

[3:13] When to use apostrophes - Laura McClure

[5:00] When will the next mass extinction occur? - Borths, D'Emic, and Pritchard

[5:19] Where did Russia come from? - Alex Gendler

[5:37] Why do we dream? - Amy Adkins

[4:34] Where does gold come from? - David Lunney

[4:29] Who was Confucius? - Bryan W. Van Norden

[3:34] Why are manhole covers round? - Marc Chamberland

[4:57] Why do cats act so weird? - Tony Buffington

[4:46] Can wildlife adapt to climate change? - Erin Eastwood

[4:12] Why do Americans and Canadians celebrate Labor Day

[4:41] Why do blood types matter? - Natalie S. Hodge

[5:01] Why do people have seasonal allergies? - Eleanor Nelsen

[4:53] Who IS Sherlock Holmes - Neil McCaw

[4:52] 吃什么补什么，原来是有科学依据的~

[4:43] The invisible motion of still objects - Ran Tivony

[4:57] The incredible collaboration behind the International Space Station - Tien Nguyen

[5:21] History vs. Napoleon Bonaparte - Alex Gendler

[4:31] How blood pressure works - Wilfred Manzano

[4:11] How brass instruments work - Al Cannon

[4:45] How computers translate human language - Ioannis Papachimonas

[5:06] How did clouds get their names? - Richard Hamblyn

[5:10] How do carbohydrates impact your health? - Richard J. Wood

[4:29] How do geckos defy gravity? - Eleanor Nelsen

[4:27] History vs. Cleopatra - Alex Gendler

[4:23] How do glasses help us see? - Andrew Bastawrous and Clare Gilbert

[4:58] How do solar panels work? - Richard Komp

[4:23] How do we know what color dinosaurs were? - Len Bloch

[4:16] How does a jellyfish sting? - Neosha S Kashef

[4:55] How does anesthesia work? - Steven Zheng

[4:06] How exposing anonymous companies could cut down on crime - Global Witness

[3:41] How false news can spread - Noah Tavlin

[4:19] How memories form and how we lose them - Catharine Young

[4:33] How do pregnancy tests work? - Tien Nguyen

[4:11] How menstruation works - Emma Bryce

[6:22] Forget shopping. Soon you'll download your new clothes - Danit Peleg

[4:56] Eye vs. camera - Michael Mauser

[4:38] Can plants talk to each other? - Richard Karban

[5:26] Can robots be creative? - Gil Weinberg

[5:12] Can you solve "Einstein’s Riddle"? - Dan Van der Vieren

[5:12] Can you solve "Einstein’s Riddle"? - Dan Van der Vieren

[3:49] Can you solve the bridge riddle? - Alex Gendler

[4:30] Can you solve the frog riddle? - Derek Abbott

[3:49] Can you solve the locker riddle? - Lisa Winer

[3:32] Football physics: The "impossible" free kick - Erez Garty

[4:07] Can you solve the passcode riddle? - Ganesh Pai

[3:59] Cell vs. virus: A battle for health - Shannon Stiles

[4:29] Could we actually live on Mars? - Mari Foroutan

[4:50] Debunking the myths of OCD - Natascha M. Santos

[4:37] Did Ancient Troy really exist? - Einav Zamir Dembin

[4:54] Do animals have language? - Michele Bishop

[4:38] Does grammar matter? - Andreea S. Calude

[4:45] Earworms: Those songs that get stuck in your head - Elizabeth Hellmuth Margulis

[4:12] Can you solve the temple riddle? - Dennis E. Shasha

[4:31] The incredible history of China's terracotta warriors - Megan Campisi and Pen-Pen Chen

[4:32] How miscommunication happens (and how to avoid it) - Katherine Hampsten

[4:08] How mucus keeps us healthy - Katharina Ribbeck

[3:18] Let's make history…by recording it - StoryCorps & TED Prize

[4:40] Making sense of irrational numbers - Ganesh Pai

[4:32] Plato’s Allegory of the Cave - Alex Gendler

[4:35] Should we be looking for life elsewhere in the universe

[4:35] Should we be looking for life elsewhere in the universe? - Aomawa Shields

[4:02] Should you trust unanimous decisions? - Derek Abbott

[3:51] Solid, liquid, gas and … plasma? - Michael Murillo

[5:45] Learning from smallpox: How to eradicate a disease - Julie Garon and Walter A. Orenstein

[3:19] The ancient origins of the Olympics - Armand D'Angour

[4:39] The beneficial bacteria that make delicious food - Erez Garty

[4:26] The benefits of good posture - Murat Dalkilinç

[5:06] The complex geometry of Islamic design - Eric Broug

[4:15] The ethical dilemma of self-driving cars - Patrick Lin

[4:57] The history of tea

[4:34] The History of the World According to Cats

[4:26] The immortal cells of Henrietta Lacks - Robin Bulleri

[5:06] The battle of the Greek tragedies - Melanie Sirof

[3:20] How misused modifiers can hurt your writing - Emma Bryce

[5:20] Is radiation dangerous? - Matt Anticole

[4:41] How to write descriptively - Nalo Hopkinson

[5:13] How parasites change their host's behavior - Jaap de Roode

[4:34] How people rationalize fraud - Kelly Richmond Pope

[5:21] How science fiction can help predict the future - Roey Tzezana

[4:51] How smart are dolphins? - Lori Marino

[4:18] How statistics can be misleading - Mark Liddell

[4:15] How stress affects your brain - Madhumita Murgia

[5:02] How Sugar Affects the Brain

[5:12] Inside the minds of animals - Bryan B Rasmussen

[4:51] How Thor got his hammer - Scott A. Mellor

[5:06] How to make your writing funnier - Cheri Steinkellner

[4:05] How to spot a counterfeit bill - Tien Nguyen

[4:36] How to grow a bone - Nina Tandon

[4:09] How to unboil an egg - Eleanor Nelsen

[4:42] How X-rays see through your skin - Ge Wang

[4:30] 5 tips to improve your critical thinking - Samantha Agoos

[3:35] How to use a semicolon - Emma Bryce

[4:45] How to make a mummy - Len Bloch

[4:53] 夏洛克的真正面貌

[4:22] A curable condition that causes blindness - Andrew Bastawrous

[4:42] The Turing test: Can a computer pass for a human? - Alex Gendler

[5:31] What "Orwellian" really means - Noah Tavlin

[4:46] What are the universal human rights? - Benedetta Berti

[4:13] What causes bad breath? - Mel Rosenberg

[4:51] What did democracy really mean in Athens? - Melissa Schwartzberg

[4:57] What happens when continents collide? - Juan D. Carrillo

[3:27] Buffalo buffalo buffalo: One-word sentences and how they work - Emma Bryce

[5:00] The surprising reason you feel awful when you're sick - Marco A. Sotomayor

[4:11] What is a calorie? - Emma Bryce

[4:16] 3 tips to boost your confidence - TED-Ed

[4:28] What is depression? - Helen M. Farrell

[5:02] What is epigenetics? - Carlos Guerrero-Bosagna

[4:32] What is leukemia? - Danilo Allegra and Dania Puggioni

[4:33] What is metallic glass? - Ashwini Bharathula

[4:19] What makes muscles grow? - Jeffrey Siegel

[4:29] What makes the Great Wall of China so extraordinary - Megan Campisi and Pen-Pen Chen

[4:49] What is abstract expressionism? - Sarah Rosenthal

[5:21] What would happen if every human suddenly disappeared? - Dan Kwartler

[6:37] The surprising (and invisible) signatures of sea creatures - Kakani Katija

[4:40] The scientific origins of the Minotaur - Matt Kaplan

[3:45] The math behind Michael Jordan’s legendary hang time - Andy Peterson and Zack Patterson

[3:40] The most lightning-struck place on Earth - Graeme Anderson

[4:22] The myth behind the Chinese zodiac - Megan Campisi and Pen-Pen Chen

[4:54] The physics of playing guitar - Oscar Fernando Perez

[4:34] Can you solve the prisoner hat riddle? - Alex Gendler