P1“What happened when we all stopped” narrated by Jane Goodall

P23 tips to boost your confidence - TED-Ed

P35 tips to improve your critical thinking - Samantha Agoos

P4A brie(f) history of cheese - Paul Kindstedt

P5A brief history of alcohol - Rod Phillips

P6A brief history of cannibalism - Bill Schutt

P7A brief history of chess - Alex Gendler

P8A brief history of dogs - David Ian Howe

P9A brief history of goths - Dan Adams

P10A brief history of melancholy - Courtney Stephens

P11A brief history of numerical systems - Alessandra King

P12A brief history of religion in art - TED-Ed

P13A curable condition that causes blindness - Andrew Bastawrous

P14A day in the life of a Cossack warrior - Alex Gendler

P15A day in the life of a Mongolian queen - Anne F. Broadbridge

P16A day in the life of a Roman soldier - Robert Garland

P17A day in the life of a teenage samurai - Constantine N. Vaporis

P18A day in the life of an ancient Athenian - Robert Garland

P19A day in the life of an ancient Celtic Druid - Philip Freeman

P20A day in the life of an ancient Egyptian doctor - Elizabeth Cox

P21A day in the life of an ancient Peruvian shaman - Gabriel Prieto

P22A day in the life of an Aztec midwife - Kay Read

P23A different way to visualize rhythm - John Varney

P24A guide to the energy of the Earth - Joshua M. Sneideman

P25A poetic experiment Walt Whitman, interpreted by three animators - Justin Moore

P26A simple way to tell insects apart - Anika Hazra

P27Accents by Denice Frohman

P28An unsung hero of the civil rights movement - Christina Greer

P29Ancient Rome’s most notorious doctor - Ramon Glazov

P30Aphasia The disorder that makes you lose your words - Susan Wortman-Jutt

P31Are food preservatives bad for you - Eleanor Nelsen

P32Are ghost ships real - Peter B. Campbell

P33Are naked mole rats the strangest mammals - Thomas Park

P34Are spotty fruits and vegetables safe to eat - Elizabeth Brauer

P35Are the illuminati real - Chip Berlet

P36Are there universal expressions of emotion - Sophie Zadeh

P37Are we living in a simulation - Zohreh Davoudi

P38Are we running out of clean water - Balsher Singh Sidhu

P39Are you a body with a mind or a mind with a body - Maryam Alimardani

P40At what moment are you dead - Randall Hayes

P41Attack of the killer algae - Eric Noel Muñoz

P42Buffalo buffalo buffalo One-word sentences and how they work - Emma Bryce

P43Can 100% renewable energy power the world - Federico Rosei and Renzo Rosei

P44Can a black hole be destroyed - Fabio Pacucci

P45Can animals be deceptive - Eldridge Adams

P46Can machines read your emotions - Kostas Karpouzis

P47Can plants talk to each other - Richard Karban

P48Can robots be creative - Gil Weinberg

P49Can steroids save your life - Anees Bahji

P50Can wildlife adapt to climate change - Erin Eastwood

P51Can you find the next number in this sequence - Alex Gendler

P52Can you outsmart this logical fallacy - Alex Gendler

P53Can you solve Einstein’s Riddle - Dan Van der Vieren

P54Can you solve the airplane riddle - Judd A. Schorr

P55Can you solve the alien probe riddle - Dan Finkel

P56Can you solve the bridge riddle - Alex Gendler

P57Can you solve the buried treasure riddle - Daniel Griller

P58Can you solve the control room riddle - Dennis Shasha

P59Can you solve the counterfeit coin riddle - Jennifer Lu

P60Can you solve the cuddly duddly fuddly wuddly riddle - Dan Finkel

P61Can you solve the dark coin riddle - Lisa Winer

P62Can you solve the dark matter fuel riddle - Dan Finkel

P63Can you solve the death race riddle - Alex Gendler

P64Can you solve the dragon jousting riddle - Alex Gendler

P65Can you solve the egg drop riddle - Yossi Elran

P66Can you solve the false positive riddle - Alex Gendler

P67Can you solve the famously difficult green-eyed logic puzzle - Alex Gendler

P68Can you solve the fish riddle - Steve Wyborney

P69Can you solve the frog riddle - Derek Abbott

P70Can you solve the giant cat army riddle - Dan Finkel

P71Can you solve the giant iron riddle - Alex Gendler

P72Can you solve the jail break riddle - Dan Finkel

P73Can you solve the killer robo-ants riddle - Dan Finkel

P74Can you solve the Leonardo da Vinci riddle - Tanya Khovanova

P75Can you solve the locker riddle - Lisa Winer

P76Can you solve the Mondrian squares riddle - Gordon Hamilton

P77Can you solve the multiplying rabbits riddle - Alex Gendler

P78Can you solve the multiverse rescue mission riddle - Dan Finkel

P79Can you solve the passcode riddle - Ganesh Pai

P80Can you solve the penniless pilgrim riddle - Daniel Finkel

P81Can you solve the pirate riddle - Alex Gendler

P82Can you solve the prisoner boxes riddle - Yossi Elran

P83Can you solve the prisoner hat riddle - Alex Gendler

P84Can you solve the Ragnarok riddle - Dan Finkel

P85Can you solve the rebel supplies riddle - Alex Gendler

P86Can you solve the river crossing riddle - Lisa Winer

P87Can you solve the rogue AI riddle - Dan Finkel

P88Can you solve the sea monster riddle - Dan Finkel

P89Can you solve the secret sauce riddle - Alex Gendler

P90Can you solve the secret werewolf riddle - Dan Finkel

P91Can you solve the seven planets riddle - Edwin F. Meyer

P92Can you solve the stolen rubies riddle - Dennis Shasha

P93Can you solve the temple riddle - Dennis E. Shasha

P94Can you solve the three gods riddle - Alex Gendler

P95Can you solve the time travel riddle - Dan Finkel

P96Can you solve the troll’s paradox riddle - Dan Finkel

P97Can you solve the unstoppable blob riddle - Dan Finkel

P98Can you solve the vampire hunter riddle - Dan Finkel

P99Can you solve the virus riddle - Lisa Winer

P100Can you solve the wizard standoff riddle - Dan Finkel

P101Can you solve the world’s most evil wizard riddle - Dan Finkel

P102Can you spot the problem with these headlines (Level 1) - Jeff Leek & Lucy McGow

P103Can you survive nuclear fallout - Brooke Buddemeier and Jessica S. Wieder

P104Cannibalism in the animal kingdom - Bill Schutt

P105Cell membranes are way more complicated than you think - Nazzy Pakpour

P106Cell vs. virus A battle for health - Shannon Stiles

P107Check your intuition The birthday problem - David Knuffke

P108Claws vs. nails - Matthew Borths

P109Climate change Earth's giant game of Tetris - Joss Fong

P110Cloudy climate change How clouds affect Earth's temperature - Jasper Kirkby

P111Corruption, wealth and beauty The history of the Venetian gondola - Laura Morell

P112Could a blind eye regenerate - David Davila

P113Could a breathalyzer detect cancer - Julian Burschka

P114Could comets be the source of life on Earth - Justin Dowd

P115Could human civilization spread across the whole galaxy - Roey Tzezana

P116Could the Earth be swallowed by a black hole - Fabio Pacucci

P117Could we create dark matter - Rolf Landua

P118Could we survive prolonged space travel - Lisa Nip

P119Could your brain repair itself - Ralitsa Petrova

P120Dead stuff The secret ingredient in our food chain - John C. Moore

P121Debunking the myths of OCD - Natascha M. Santos

P122Did ancient Troy really exist - Einav Zamir Dembin

P123Did Shakespeare write his plays - Natalya St. Clair and Aaron Williams

P124Did the Amazons really exist - Adrienne Mayor

P125Do animals have language - Michele Bishop

P126Do politics make us irrational - Jay Van Bavel

P127Does The Wonderful Wizard of Oz have a hidden message - David B. Parker

P128Does grammar matter - Andreea S. Calude

P129Does stress affect your memory - Elizabeth Cox

P130Does time exist - Andrew Zimmerman Jones

P131Earworms Those songs that get stuck in your head - Elizabeth Hellmuth Margulis

P132Einstein's brilliant mistake Entangled states - Chad Orzel

P133Einstein's twin paradox explained - Amber Stuver

P134Everything changed when the fire crystal got stolen - Alex Gendler

P135Everything you need to know to read Frankenstein - Iseult Gillespie

P136Everything you need to know to read “The Canterbury Tales” - Iseult Gillespie

P137Everything you need to know to read Homer's Odyssey - Jill Dash

P138Explore cave paintings in this 360° animated cave - Iseult Gillespie

P139Eye vs. camera - Michael Mauser

P140Feedback loops How nature gets its rhythms - Anje-Margriet Neutel

P141First Kiss by Tim Seibles

P142First person vs. Second person vs. Third person - Rebekah Bergman

P143Football physics The impossible free kick - Erez Garty

P144For Estefani poem by Aracelis Girmay

P145Forget shopping. Soon you'll download your new clothes - Danit Peleg

P146Frida Kahlo The woman behind the legend - Iseult Gillespie

P147From pacifist to spy WWII’s surprising secret agent - Shrabani Basu

P148From slave to rebel gladiator The life of Spartacus - Fiona Radford

P149Game theory challenge Can you predict human behavior - Lucas Husted

P150Group theory 101 How to play a Rubik’s Cube like a piano - Michael Staff

P151Hacking bacteria to fight cancer - Tal Danino

P152Harvey Milk's radical vision of equality - Lillian Faderman

P153Hawking's black hole paradox explained - Fabio Pacucci

P154History through the eyes of a chicken - Chris A. Kniesly

P155History through the eyes of the potato - Leo Bear-McGuinness

P156History vs. Augustus - Peta Greenfield & Alex Gendler

P157History vs. Che Guevara - Alex Gendler

P158History vs. Christopher Columbus - Alex Gendler

P159History vs. Cleopatra - Alex Gendler

P160History vs. Henry VIII - Mark Robinson and Alex Gendler

P161History vs. Napoleon Bonaparte - Alex Gendler

P162History vs. Sigmund Freud - Todd Dufresne

P163The psychology of post-traumatic stress disorder - Joelle Rabow Maletis

P164How do blood transfusions work - Bill Schutt

P165Why should you read “Midnight’s Children” - Iseult Gillespie

P166History's worst nun - Theresa A. Yugar

P167How did Polynesian wayfinders navigate the Pacific Ocean - Alan Tamayose and Sha

P168How do hard drives work - Kanawat Senanan

P169The history of the world according to cats - Eva-Maria Geigl

P170How to biohack your cells to fight cancer - Greg Foot

P171How do virus tests actually work - Cella Wright

P172What causes opioid addiction, and why is it so tough to combat - Mike Davis

P173How to recognize a dystopia - Alex Gendler

P174What makes something Kafkaesque - Noah Tavlin

P175The Aztec myth of the unlikeliest sun god - Kay Almere Read

P176The surprising (and invisible) signatures of sea creatures - Kakani Katija

P177The neuroscience of imagination - Andrey Vyshedskiy

P178The Factory Think Like A Coder, Ep 9

P179From slave to rebel gladiator The life of Spartacus - Fiona Radford

P180Where did Russia come from - Alex Gendler

P181How cosmic rays help us understand the universe - Veronica Bindi

P182What's hidden among the tallest trees on Earth - Wendell Oshiro

P183When is a pandemic over

P184The ethical dilemma of self-driving cars - Patrick Lin

P185How aspirin was discovered - Krishna Sudhir

P186The ballet that incited a riot - Iseult Gillespie

P187What did democracy really mean in Athens - Melissa Schwartzberg

P188Why do we pass gas - Purna Kashyap

P189The case of the missing fractals - Alex Rosenthal and George Zaidan

P190Why should you read Charles Dickens - Iseult Gillespie

P191What Orwellian really means - Noah Tavlin

P192Why should you read Virgil's Aeneid - Mark Robinson

P193The myth of Icarus and Daedalus - Amy Adkins

P194For Estefani poem by Aracelis Girmay

P195The treadmill's dark and twisted past - Conor Heffernan

P196Why should you read James Joyce's Ulysses - Sam Slote

P197Why do we hiccup - John Cameron

P198One of the most epic engineering feats in history - Alex Gendler

P199The Opposites Game

P200Cloudy climate change How clouds affect Earth's temperature - Jasper Kirkby

P201What makes a poem … a poem - Melissa Kovacs

P202Under the hood The chemistry of cars - Cynthia Chubbuck

P203The myth of Cupid and Psyche - Brendan Pelsue

P204How science fiction can help predict the future - Roey Tzezana

P205Why should you read Dante’s “Divine Comedy” - Sheila Marie Orfano

P206Why don't perpetual motion machines ever work - Netta Schramm

P207How the Monkey King escaped the underworld - Shunan Teng

P208Solid, liquid, gas and … plasma - Michael Murillo

P209Your body vs. implants - Kaitlyn Sadtler

P210Why should you read “Kafka on the Shore” - Iseult Gillespie

P211How one scientist averted a national health crisis - Andrea Tone

P212The physics of playing guitar - Oscar Fernando Perez

P213Ugly history The 1937 Haitian Massacre - Edward Paulino

P214Is graffiti art Or vandalism - Kelly Wall

P215Forget shopping. Soon you'll download your new clothes - Danit Peleg

P216The murder of ancient Alexandria's greatest scholar - Soraya Field Fiorio

P217Why should you read Waiting For Godot - Iseult Gillespie

P218The history of African-American social dance - Camille A. Brown

P219What is abstract expressionism - Sarah Rosenthal

P220History’s deadliest colors - J. V. Maranto

P221Why is it so hard to cure cancer - Kyuson Yun

P222The Taino myth of the cursed creator - Bill Keegan

P223What causes heartburn - Rusha Modi

P224How quantum mechanics explains global warming - Lieven Scheire

P225Licking bees and pulping trees The reign of a wasp queen - Kenny Coogan

P226The secret lives of baby fish - Amy McDermott

P227How do schools of fish swim in harmony - Nathan S. Jacobs

P228Ugly history Japanese American incarceration camps - Densho

P229Does time exist - Andrew Zimmerman Jones

P230Why are fish fish-shaped - Lauren Sallan

P231The complex geometry of Islamic design - Eric Broug

P232Frida Kahlo The woman behind the legend - Iseult Gillespie

P233Why do your knuckles pop - Eleanor Nelsen

P234The left brain vs. right brain myth - Elizabeth Waters

P235Why do people have seasonal allergies - Eleanor Nelsen

P236The chaotic brilliance of artist Jean-Michel Basquiat - Jordana Moore Saggese

P237The Gauntlet  Think Like A Coder, Ep 8

P238The myth of Hercules 12 labors in 8-bits - Alex Gendler

P239The unexpected math behind Van Gogh's Starry Night - Natalya St. Clair

P240The dangers of mixing drugs - Céline Valéry

P241What caused the French Revolution - Tom Mullaney

P242How spontaneous brain activity keeps you alive - Nathan S. Jacobs

P243The controversial origins of the Encyclopedia - Addison Anderson

P244Is there any truth to the King Arthur legends - Alan Lupack

P245The Chasm Think Like A Coder, Ep 6

P246The history of the world according to corn - Chris A. Kniesly

P247What’s the point(e) of ballet - Ming Luke

P248Who were the Vestal Virgins, and what was their job - Peta Greenfield

P249Did the Amazons really exist - Adrienne Mayor

P250Is it possible to create a perfect vacuum - Rolf Landua and Anais Rassat

P251The complicated history of surfing - Scott Laderman

P252Why aren't we only using solar power - Alexandros George Charalambides

P253The mathematics of sidewalk illusions - Fumiko Futamura

P254How do crystals work - Graham Baird

P255Why does your voice change as you get older - Shaylin A. Schundler

P256Why do animals form swarms - Maria R. D'Orsogna

P257How do ventilators work - Alex Gendler

P258When is water safe to drink - Mia Nacamulli

P259Inside the killer whale matriarchy - Darren Croft

P260How does money laundering work - Delena D. Spann

P261The rise and fall of the Inca Empire - Gordon McEwan

P262The microbial jungles all over the place (and you) - Scott Chimileski and Robert

P263Why is this painting so shocking - Iseult Gillespie

P264Turbulence one of the great unsolved mysteries of physics - Tomás Chor

P265Why should you read “Lord of the Flies” by William Golding - Jill Dash

P266How small are we in the scale of the universe - Alex Hofeldt

P267The myth of the Sampo— an infinite source of fortune and greed - Hanna-Ilona Här

P268The myth of Jason and the Argonauts - Iseult Gillespie

P269Why should you read “Crime and Punishment” - Alex Gendler

P270How statistics can be misleading - Mark Liddell

P271How brass instruments work - Al Cannon

P272Ugly History Witch Hunts - Brian A. Pavlac

P273How do self-driving cars “see” - Sajan Saini

P274The coelacanth A living fossil of a fish - Erin Eastwood

P275How to detect a supernova - Samantha Kuula

P276Why can't you divide by zero - TED-Ed

P277The great brain debate - Ted Altschuler

P278Underwater farms vs. climate change - Ayana Elizabeth Johnson and Megan Davis

P279What is the tragedy of the commons - Nicholas Amendolare

P280Learning from smallpox How to eradicate a disease - Julie Garon and Walter A. Or

P281How exposing anonymous companies could cut down on crime - Global Witness

P282The ancient origins of the Olympics - Armand D'Angour

P283Do we really need pesticides - Fernan Pérez-Gálvez

P284The myth of Prometheus - Iseult Gillespie

P285What’s a squillo, and why do opera singers need it - Ming Luke

P286How does your body process medicine - Céline Valéry

P287How do glasses help us see - Andrew Bastawrous and Clare Gilbert

P288The science of snowflakes - Maruša Bradač

P289Feedback loops How nature gets its rhythms - Anje-Margriet Neutel

P290Why is biodiversity so important - Kim Preshoff

P291The hidden network that makes the internet possible - Sajan Saini

P292What light can teach us about the universe - Pete Edwards

P293The myth of Pandora’s box - Iseult Gillespie

P294Why the insect brain is so incredible - Anna Stöckl

P295Could comets be the source of life on Earth - Justin Dowd

P296Is DNA the future of data storage - Leo Bear-McGuinness

P297Meet the tardigrade, the toughest animal on Earth - Thomas Boothby

P298Is math discovered or invented - Jeff Dekofsky

P299Why isn’t the Netherlands underwater - Stefan Al

P300What makes neon signs glow A 360° animation - Michael Lipman

P301How to squeeze electricity out of crystals - Ashwini Bharathula

P302What's so special about Viking ships - Jan Bill

P303Why should you read The Handmaid's Tale - Naomi R. Mercer

P304The myth of Oisín and the land of eternal youth - Iseult Gillespie

P305What happens when continents collide - Juan D. Carrillo

P306The last banana A thought experiment in probability - Leonardo Barichello

P307The evolution of the book - Julie Dreyfuss

P308First person vs. Second person vs. Third person - Rebekah Bergman

P309How the Normans changed the history of Europe - Mark Robinson

P310Why should you read Tolstoy's War and Peace - Brendan Pelsue

P311How can you change someone's mind (hint facts aren't always enough) - Hugo Merci

P312How does your body know what time it is - Marco A. Sotomayor

P313Light seconds, light years, light centuries How to measure extreme distances - Y

P314How people rationalize fraud - Kelly Richmond Pope

P315The Cambodian myth of lightning, thunder, and rain - Prumsodun Ok

P316How fast can a vaccine be made - Dan Kwartler

P317Why should you read sci-fi superstar Octavia E. Butler - Ayana Jamieson and Moya

P318The Prison Break Think Like A Coder, Ep 1

P319What are the universal human rights - Benedetta Berti

P320The Turing test Can a computer pass for a human - Alex Gendler

P321The accident that changed the world - Allison Ramsey and Mary Staicu

P322How Magellan circumnavigated the globe - Ewandro Magalhaes

P323Real life sunken cities - Peter Campbell

P324How this disease changes the shape of your cells - Amber M. Yates

P325The pharaoh that wouldn't be forgotten - Kate Green

P326What really happened during the Salem Witch Trials - Brian A. Pavlac

P327Why are sharks so awesome - Tierney Thys

P328The most lightning-struck place on Earth - Graeme Anderson

P329First Kiss by Tim Seibles

P330The electrifying speeches of Sojourner Truth - Daina Ramey Berry

P331Hawking's black hole paradox explained - Fabio Pacucci

P332The Resistance Think Like A Coder, Ep 2

P333Mating frenzies, sperm hoards, and brood raids the life of a fire ant queen - Wa

P334How much of what you see is a hallucination - Elizabeth Cox

P335Who was Confucius - Bryan W. Van Norden

P336The rise and fall of the Mongol Empire - Anne F. Broadbridge

P337The historic women’s suffrage march on Washington - Michelle Mehrtens

P338How computers translate human language - Ioannis Papachimonas

P339How do ocean currents work - Jennifer Verduin

P340Do politics make us irrational - Jay Van Bavel

P341The meaning of life according to Simone de Beauvoir - Iseult Gillespie

P342Corruption, wealth and beauty The history of the Venetian gondola - Laura Morell

P343What’s so great about the Great Lakes - Cheri Dobbs and Jennifer Gabrys

P344The cancer gene we all have - Michael Windelspecht

P345Why should you read Shakespeare’s “The Tempest” - Iseult Gillespie

P346Three ways the universe could end - Venus Keus

P347How optical illusions trick your brain - Nathan S. Jacobs

P348Tycho Brahe, the scandalous astronomer - Dan Wenkel

P349Is fire a solid, a liquid, or a gas - Elizabeth Cox

P350How to understand power - Eric Liu

P351Is our climate headed for a mathematical tipping point - Victor J. Donnay

P352The mysterious science of pain - Joshua W. Pate

P353History through the eyes of a chicken - Chris A. Kniesly

P354What makes tattoos permanent - Claudia Aguirre

P355The hidden life of Rosa Parks - Riché D. Richardson

P356The real story behind Archimedes’ Eureka! - Armand D'Angour

P357How does the Nobel Peace Prize work - Adeline Cuvelier and Toril Rokseth

P358Could a blind eye regenerate - David Davila

P359You are more transparent than you think - Sajan Saini

P360Rhythm in a box The story of the cajon drum - Paul Jennings

P361Why should you read A Midsummer Night's Dream - Iseult Gillespie

P362Let's make history…by recording it - StoryCorps & TED Prize

P363The benefits of a bilingual brain - Mia Nacamulli

P364This sea creature breathes through its butt - Cella Wright

P365How did Hitler rise to power - Alex Gendler and Anthony Hazard

P366What happens if you cut down all of a city's trees - Stefan Al

P367How do birds learn to sing - Partha P. Mitra

P368Why is meningitis so dangerous - Melvin Sanicas

P369Zen kōans unsolvable enigmas designed to break your brain - Puqun Li

P370How did teeth evolve - Peter S. Ungar

P371How CRISPR lets you edit DNA - Andrea M. Henle

P372Why should you read Don Quixote - Ilan Stavans

P373What do all languages have in common - Cameron Morin

P374The battle of the Greek tragedies - Melanie Sirof

P375Plato’s Allegory of the Cave - Alex Gendler

P376The genius of Marie Curie - Shohini Ghose

P377Why elephants never forget - Alex Gendler

P378How do executive orders work - Christina Greer

P379Why should you read “Moby Dick” - Sascha Morrell

P380What can DNA tests really tell us about our ancestry - Prosanta Chakrabarty

P381The myth of Sisyphus - Alex Gendler

P382The rise and fall of the Assyrian Empire - Marian H Feldman

P383What can Schrödinger's cat teach us about quantum mechanics - Josh Samani

P384The surprising reason our muscles get tired - Christian Moro

P385The world’s most mysterious book - Stephen Bax

P386The Atlantic slave trade What too few textbooks told you - Anthony Hazard

P387How high can you count on your fingers (Spoiler much higher than 10) - James Tan

P388How to speak monkey The language of cotton-top tamarins - Anne Savage

P389How to grow a glacier - M Jackson

P390How to master your sense of smell - Alexandra Horowitz

P391How menstruation works - Emma Bryce

P392How much of human history is on the bottom of the ocean - Peter Campbell

P393From pacifist to spy WWII’s surprising secret agent - Shrabani Basu

P394How one journalist risked her life to hold murderers accountable - Christina Gre

P395The Furnace Bots Think Like A Coder, Ep 3

P396The origin of countless conspiracy theories - PatrickJMT

P397How squids outsmart their predators - Carly Anne York

P398Why do honeybees love hexagons - Zack Patterson and Andy Peterson

P399Dead stuff The secret ingredient in our food chain - John C. Moore

P400Where do new words come from - Marcel Danesi

P401How do pregnancy tests work - Tien Nguyen

P402The Sun’s surprising movement across the sky - Gordon Williamson

P403The surprising cause of stomach ulcers - Rusha Modi

P404Why should you read Hamlet - Iseult Gillespie

P405The wicked wit of Jane Austen - Iseult Gillespie

P406The science of skin color - Angela Koine Flynn

P407What is McCarthyism And how did it happen - Ellen Schrecker

P408Jellyfish predate dinosaurs. How have they survived so long - David Gruber

P409Why do buildings fall in earthquakes - Vicki V. May

P410The Greek myth of Talos, the first robot - Adrienne Mayor

P411How does the Rorschach inkblot test work - Damion Searls

P412The surprising reason you feel awful when you're sick - Marco A. Sotomayor

P413The ferocious predatory dinosaurs of Cretaceous Sahara - Nizar Ibrahim

P414Ideasthesia How do ideas feel - Danko Nikolić

P415The race to sequence the human genome - Tien Nguyen

P416What would happen if every human suddenly disappeared - Dan Kwartler

P417The psychology behind irrational decisions - Sara Garofalo

P418Why is it so hard to cure ALS - Fernando G. Vieira

P419How to visualize one part per million - Kim Preshoff + The TED-Ed Community

P420The tale of the doctor who defied Death - Iseult Gillespie

P421The hidden worlds within natural history museums - Joshua Drew

P422What is a gift economy - Alex Gendler

P423Titan of terror the dark imagination of H.P. Lovecraft - Silvia Moreno-García

P424Why do people join cults - Janja Lalich

P425Why is Vermeer's Girl with the Pearl Earring considered a masterpiece - James

P426Infinity according to Jorge Luis Borges - Ilan Stavans

P427How heavy is air - Dan Quinn

P428How stress affects your brain - Madhumita Murgia

P429The colossal consequences of supervolcanoes - Alex Gendler

P430What is Alzheimer's disease - Ivan Seah Yu Jun

P431How to build a dark matter detector - Jenna Saffin

P432Why should you read “The Master and Margarita” - Alex Gendler

P433How do viruses jump from animals to humans - Ben Longdon

P434Oxygen’s surprisingly complex journey through your body - Enda Butler

P435Why incompetent people think they're amazing - David Dunning

P436How does hibernation work - Sheena Lee Faherty

P437The invisible motion of still objects - Ran Tivony

P438The legend of Annapurna, Hindu goddess of nourishment - Antara Raychaudhuri & Is

P439How to write descriptively - Nalo Hopkinson

P440The art forger who tricked the Nazis - Noah Charney

P441What causes body odor - Mel Rosenberg

P442The history of the Cuban Missile Crisis - Matthew A. Jordan

P443The bug that poops candy - George Zaidan

P444What is obesity - Mia Nacamulli

P445The history of tattoos - Addison Anderson

P446The secret student resistance to Hitler - Iseult Gillespie

P447Where did English come from - Claire Bowern

P448History vs. Che Guevara - Alex Gendler

P449Debunking the myths of OCD - Natascha M. Santos

P450What is the universe expanding into - Sajan Saini

P451Hacking bacteria to fight cancer - Tal Danino

P452Why doesn’t the Leaning Tower of Pisa fall over - Alex Gendler

P453Mansa Musa, one of the wealthiest people who ever lived - Jessica Smith

P454The lovable (and lethal) sea lion - Claire Simeone

P455Is telekinesis real - Emma Bryce

P456The life cycle of a neutron star - David Lunney

P457Einstein's twin paradox explained - Amber Stuver

P458The mysterious origins of life on Earth - Luka Seamus Wright

P459Why should you read Sylvia Plath - Iseult Gillespie

P460Why should you read “The God of Small Things” by Arundhati Roy - Laura Wright

P461History vs. Vladimir Lenin - Alex Gendler

P462The dangerous race for the South Pole - Elizabeth Leane

P463Why should you read Macbeth - Brendan Pelsue

P464The sonic boom problem - Katerina Kaouri

P465The myth of Loki and the master builder - Alex Gendler

P466Why do people fear the wrong things - Gerd Gigerenzer

P467The fascinating science behind phantom limbs - Joshua W. Pate

P468How do drugs affect the brain - Sara Garofalo

P469The evolution of animal genitalia - Menno Schilthuizen

P470How false news can spread - Noah Tavlin

P471Which is stronger Glue or tape - Elizabeth Cox

P472Everything you need to know to read Homer's Odyssey - Jill Dash

P473The journey to Pluto, the farthest world ever explored - Alan Stern

P474What “Machiavellian” really means - Pazit Cahlon and Alex Gendler

P475Explore cave paintings in this 360° animated cave - Iseult Gillespie

P476The physics of surfing - Nick Pizzo

P477Harvey Milk's radical vision of equality - Lillian Faderman

P478The Chinese myth of the meddling monk - Shunan Teng

P479How computer memory works - Kanawat Senanan

P480Is marijuana bad for your brain - Anees Bahji

P481Why are some people left-handed - Daniel M. Abrams

P482Why do whales sing - Stephanie Sardelis

P483How far would you have to go to escape gravity - Rene Laufer

P484What we know (and don't know) about Ebola - Alex Gendler

P485The first and last king of Haiti - Marlene Daut

P486How can we solve the antibiotic resistance crisis - Gerry Wright

P487Where does gold come from - David Lunney

P488How to make your writing suspenseful - Victoria Smith

P489Should we get rid of standardized testing - Arlo Kempf

P490What really happened to the Library of Alexandria - Elizabeth Cox

P491Should we be looking for life elsewhere in the universe - Aomawa Shields

P492Why the Arctic is climate change's canary in the coal mine - William Chapman

P493Everything changed when the fire crystal got stolen - Alex Gendler

P494The history of chocolate - Deanna Pucciarelli

P495How the world's first metro system was built - Christian Wolmar

P496Eye vs. camera - Michael Mauser

P497Why wasn’t the Bill of Rights originally in the US Constitution - James Coll

P498The psychology of narcissism - W. Keith Campbell

P499The time value of money - German Nande

P500How parasites change their host's behavior - Jaap de Roode

P501How do focus groups work - Hector Lanz

P502How do lungs work - Emma Bryce

P503The rise and fall of the Berlin Wall - Konrad H. Jarausch

P504How the world's longest underwater tunnel was built - Alex Gendler

P505History vs. Genghis Khan - Alex Gendler

P506Why is ketchup so hard to pour - George Zaidan

P507The weird and wonderful metamorphosis of the butterfly - Franziska Bauer

P508Could we create dark matter - Rolf Landua

P509The philosophy of cynicism - William D. Desmond

P510Everything you need to know to read Frankenstein - Iseult Gillespie

P511What is phantom traffic and why is it ruining your life - Benjamin Seibold

P512If matter falls down, does antimatter fall up - Chloé Malbrunot

P513Why do blood types matter - Natalie S. Hodge

P514How to spot a pyramid scheme - Stacie Bosley

P515Why certain naturally occurring wildfires are necessary - Jim Schulz

P516Why do we have museums - J. V. Maranto

P517The nurdles' quest for ocean domination - Kim Preshoff

P518Why should you read “Fahrenheit 451” - Iseult Gillespie

P519How to practice effectively...for just about anything - Annie Bosler and Don Gre

P520The Chinese myth of the immortal white snake - Shunan Teng

P521Why should you listen to Vivaldi's Four Seasons - Betsy Schwarm

P522How does your brain respond to pain - Karen D. Davis

P523What can you learn from ancient skeletons - Farnaz Khatibi

P524The high-stakes race to make quantum computers work - Chiara Decaroli

P525Sugar Hiding in plain sight - Robert Lustig

P526The pleasure of poetic pattern - David Silverstein

P527Why tragedies are alluring - David E. Rivas

P528How languages evolve - Alex Gendler

P529Could your brain repair itself - Ralitsa Petrova

P530The fascinating history of cemeteries - Keith Eggener

P531How close are we to eradicating HIV - Philip A. Chan

P532How playing sports benefits your body ... and your brain - Leah Lagos and Jaspal

P533How do fish make electricity - Eleanor Nelsen

P534Will the ocean ever run out of fish - Ayana Elizabeth Johnson and Jennifer Jacqu

P535Why are earthquakes so hard to predict - Jean-Baptiste P. Koehl

P536Why is cotton in everything - Michael R. Stiff

P537How do nuclear power plants work - M. V. Ramana and Sajan Saini

P538What causes cavities - Mel Rosenberg

P539What causes bad breath - Mel Rosenberg

P540The sexual deception of orchids - Anne Gaskett

P541How does impeachment work - Alex Gendler

P542Why is NASA sending a spacecraft to a metal world - Linda T. Elkins-Tanton

P543Earworms Those songs that get stuck in your head - Elizabeth Hellmuth Margulis

P544History vs. Cleopatra - Alex Gendler

P545How a single-celled organism almost wiped out life on Earth - Anusuya Willis

P546Why should you read Kurt Vonnegut - Mia Nacamulli

P547Why is Aristophanes called The Father of Comedy - Mark Robinson

P548The otherworldly creatures in the ocean's deepest depths - Lidia Lins

P549The myth of Arachne - Iseult Gillespie

P550Football physics The impossible free kick - Erez Garty

P551The incredible collaboration behind the International Space Station - Tien Nguye

P552The mathematical secrets of Pascal’s triangle - Wajdi Mohamed Ratemi

P553What’s a smartphone made of - Kim Preshoff

P554How Thor got his hammer - Scott A. Mellor

P555How tall can a tree grow - Valentin Hammoudi

P556The threat of invasive species - Jennifer Klos

P557Is there a reproducibility crisis in science - Matt Anticole

P558The power of the placebo effect - Emma Bryce

P559The poet who painted with his words - Geneviève Emy

P560What causes economic bubbles - Prateek Singh

P561Why do we sweat - John Murnan

P562Vultures The acid-puking, plague-busting heroes of the ecosystem - Kenny Coogan

P563Does The Wonderful Wizard of Oz have a hidden message - David B. Parker

P564The secret language of trees - Camille Defrenne and Suzanne Simard

P565Who am I A philosophical inquiry - Amy Adkins

P566The Akune brothers Siblings on opposite sides of war - Wendell Oshiro

P567How does asthma work - Christopher E. Gaw

P568How smudge-proof lipstick was invented Moments of Vision 6 - Jessica Oreck

P569How we think complex cells evolved - Adam Jacobson

P570What is dust made of - Michael Marder

P571The first asteroid ever discovered - Carrie Nugent

P572The tragic myth of Orpheus and Eurydice - Brendan Pelsue

P573The wild world of carnivorous plants - Kenny Coogan

P574What makes tuberculosis (TB) the world's most infectious killer - Melvin Sanicas

P575Why are we so attached to our things - Christian Jarrett

P576How tsunamis work - Alex Gendler

P577How does the stock market work - Oliver Elfenbaum

P578The dark history of IQ tests - Stefan C. Dombrowski

P579How many verb tenses are there in English - Anna Ananichuk

P580Music and math The genius of Beethoven - Natalya St. Clair

P581What yoga does to your body and brain - Krishna Sudhir

P582What's the difference between accuracy and precision - Matt Anticole

P583Why is being scared so fun - Margee Kerr

P584How did clouds get their names - Richard Hamblyn

P585How do US Supreme Court justices get appointed - Peter Paccone

P586How memories form and how we lose them - Catharine Young

P587How to create cleaner coal - Emma Bryce

P588Which voting system is the best - Alex Gendler

P589The scientific origins of the Minotaur - Matt Kaplan

P590The wars that inspired Game of Thrones - Alex Gendler

P591How to spot a counterfeit bill - Tien Nguyen

P592Who's at risk for colon cancer - Amit H. Sachdev and Frank G. Gress

P593Who IS Sherlock Holmes - Neil McCaw

P594The myth of Thor's journey to the land of giants - Scott A. Mellor

P595How does cancer spread through the body - Ivan Seah Yu Jun

P596The secret messages of Viking runestones - Jesse Byock

P597When to use me , myself and I - Emma Bryce

P598What does it mean to be a refugee - Benedetta Berti and Evelien Borgman

P599The past, present and future of the bubonic plague - Sharon N. DeWitte

P600Will there ever be a mile-high skyscraper - Stefan Al

P601How a few scientists transformed the way we think about disease - Tien Nguyen

P602How North America got its shape - Peter J. Haproff

P603Could we actually live on Mars - Mari Foroutan

P604What’s the smallest thing in the universe - Jonathan Butterworth

P605The mysterious life and death of Rasputin - Eden Girma

P606Einstein's brilliant mistake Entangled states - Chad Orzel

P607The philosophy of Stoicism - Massimo Pigliucci

P608Why do animals have such different lifespans - Joao Pedro de Magalhaes

P609History through the eyes of the potato - Leo Bear-McGuinness

P610The rise and fall of the Byzantine Empire - Leonora Neville

P611How to make your writing funnier - Cheri Steinkellner

P612The most successful pirate of all time - Dian Murray

P613How does fracking work - Mia Nacamulli

P614The three different ways mammals give birth - Kate Slabosky

P615Do animals have language - Michele Bishop

P616Why doesn’t anything stick to Teflon - Ashwini Bharathula

P617Could human civilization spread across the whole galaxy - Roey Tzezana

P618How rollercoasters affect your body - Brian D. Avery

P619The exceptional life of Benjamin Banneker - Rose-Margaret Ekeng-Itua

P620How your muscular system works - Emma Bryce

P621How the food you eat affects your gut - Shilpa Ravella

P622The coin flip conundrum - Po-Shen Loh

P623The Romans flooded the Colosseum for sea battles - Janelle Peters

P624Why should you read “The Joy Luck Club” by Amy Tan - Sheila Marie Orfano

P625How do we know what color dinosaurs were - Len Bloch

P626Could a breathalyzer detect cancer - Julian Burschka

P627What does the liver do - Emma Bryce

P628How to make a mummy - Len Bloch

P629How mucus keeps us healthy - Katharina Ribbeck

P630What really happens to the plastic you throw away - Emma Bryce

P631Why Shakespeare loved iambic pentameter - David T. Freeman and Gregory Taylor

P632What causes headaches - Dan Kwartler

P633What is bipolar disorder - Helen M. Farrell

P634Where do math symbols come from - John David Walters

P635What does this symbol actually mean - Adrian Treharne

P636What would happen if you didn’t sleep - Claudia Aguirre

P637How to spot a misleading graph - Lea Gaslowitz

P638What is consciousness - Michael S. A. Graziano

P639The Egyptian Book of the Dead A guidebook for the underworld - Tejal Gala

P640How plants tell time - Dasha Savage

P641The language of lying — Noah Zandan

P642Group theory 101 How to play a Rubik’s Cube like a piano - Michael Staff

P643How bones make blood - Melody Smith

P644How playing an instrument benefits your brain - Anita Collins

P645History vs. Augustus - Peta Greenfield & Alex Gendler

P646What happens when you have a concussion - Clifford Robbins

P647Why do our bodies age - Monica Menesini

P648Is there a disease that makes us love cats - Jaap de Roode

P649The benefits of a good night's sleep - Shai Marcu

P650What did dogs teach humans about diabetes - Duncan C. Ferguson

P651How smart are dolphins - Lori Marino

P652What is a coronavirus - Elizabeth Cox

P653What happens to our bodies after we die - Farnaz Khatibi Jafari

P654The beneficial bacteria that make delicious food - Erez Garty

P655What you might not know about the Declaration of Independence - Kenneth C. Davis

P656History vs. Sigmund Freud - Todd Dufresne

P657What is a butt tuba and why is it in medieval art - Michelle Brown

P658How do solar panels work - Richard Komp

P659The origins of ballet - Jennifer Tortorello and Adrienne Westwood

P660History vs. Richard Nixon - Alex Gendler

P661Why do humans have a third eyelid - Dorsa Amir

P662How does anesthesia work - Steven Zheng

P663How do carbohydrates impact your health - Richard J. Wood

P664This is Sparta Fierce warriors of the ancient world - Craig Zimmer

P665The immortal cells of Henrietta Lacks - Robin Bulleri

P666Notes of a native son The world according to James Baldwin - Christina Greer

P667The Irish myth of the Giant's Causeway - Iseult Gillespie

P668What causes an economic recession - Richard Coffin

P669Why sitting is bad for you - Murat Dalkilinç

P670What is leukemia - Danilo Allegra and Dania Puggioni

P671What causes kidney stones - Arash Shadman

P672How coffee got quicker Moments of Vision 2 - Jessica Oreck

P673Would winning the lottery make you happier - Raj Raghunathan

P674The science of static electricity - Anuradha Bhagwat

P675How super glue was invented Moments of Vision 8 - Jessica Oreck

P676History vs. Napoleon Bonaparte - Alex Gendler

P677The mighty mathematics of the lever - Andy Peterson and Zack Patterson

P678How bees help plants have sex - Fernanda S. Valdovinos

P679Did Shakespeare write his plays - Natalya St. Clair and Aaron Williams

P680How the popsicle was invented Moments of Vision 11 - Jessica Oreck

P681How the Königsberg bridge problem changed mathematics - Dan Van der Vieren

P682How turtle shells evolved... twice - Judy Cebra Thomas

P683What is imposter syndrome and how can you combat it - Elizabeth Cox

P684Inside the minds of animals - Bryan B Rasmussen

P685Did ancient Troy really exist - Einav Zamir Dembin

P686How the stethoscope was invented Moments of Vision 7 - Jessica Oreck

P687The wildly complex anatomy of a sneaker - Angel Chang

P688Why do we love A philosophical inquiry - Skye C. Cleary

P689How miscommunication happens (and how to avoid it) - Katherine Hampsten

P690The Maya myth of the morning star

P691Is radiation dangerous - Matt Anticole

P692What causes insomnia - Dan Kwartler

P693Why don’t poisonous animals poison themselves - Rebecca D. Tarvin

P694Why are human bodies asymmetrical - Leo Q. Wan

P695The 2,400-year search for the atom - Theresa Doud

P696Why do you need to get a flu shot every year - Melvin Sanicas

P697How do brain scans work - John Borghi and Elizabeth Waters

P698What causes antibiotic resistance - Kevin Wu

P699Why should you read Flannery O’Connor - Iseult Gillespie

P700What’s the big deal with gluten - William D. Chey

P701How does your smartphone know your location - Wilton L. Virgo

P702The truth about electroconvulsive therapy (ECT) - Helen M. Farrell

P703How X-rays see through your skin - Ge Wang

P704How do vitamins work - Ginnie Trinh Nguyen

P705Why do women have periods

P706How stress affects your body - Sharon Horesh Bergquist

P707History vs. Christopher Columbus - Alex Gendler

P708The law of conservation of mass - Todd Ramsey

P709History vs. Henry VIII - Mark Robinson and Alex Gendler

P710Why are there so many insects - Murry Gans

P711How a wound heals itself - Sarthak Sinha

P712Would you opt for a life with no pain - Hayley Levitt and Bethany Rickwald

P713What happens during a heart attack - Krishna Sudhir

P714The science of attraction - Dawn Maslar

P715How long will human impacts last - David Biello

P716Why are manhole covers round - Marc Chamberland

P717The great conspiracy against Julius Caesar - Kathryn Tempest

P718Claws vs. nails - Matthew Borths

P719Everything you need to know to read “The Canterbury Tales” - Iseult Gillespie

P720How exactly does binary code work - José Américo N L F de Freitas

P721Does stress affect your memory - Elizabeth Cox

P722How do tornadoes form - James Spann

P723How the rubber glove was invented Moments of Vision 4 - Jessica Oreck

P724The princess who rewrote history - Leonora Neville

P725The evolution of the human eye - Joshua Harvey

P726Nature's smallest factory The Calvin cycle - Cathy Symington

P727The Silk Road Connecting the ancient world through trade - Shannon Harris Castel

P728How does the thyroid manage your metabolism - Emma Bryce

P729Why do we feel nostalgia - Clay Routledge

P730What is epigenetics - Carlos Guerrero-Bosagna

P731How to grow a bone - Nina Tandon

P732Master the art of public speaking with TED M

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