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Space TimeSpace Time explores the outer reaches of space, the craziness of astrophysics, the possibilities of sci-fi, and anything else you can think of beyond Planet Earth.
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- Now Playing16minHow Eclipses Revealed Our Solar System
- Now Playing10minA Giant Monster With a Giant Problem
- Now Playing10minWhat Will Earth Be Like 300 Million Years From Now?
- Now Playing16minWhat If Gravity is Not A Fundamental Force?
- Now Playing15minDoes Space Emerge From A Holographic Boundary?
- Now Playing8minIs the Southern Accent Disappearing?
- Now Playing15minThis Winter Trend Is Overpowering Global Warming
- Now Playing8minWhat Was The Earliest Surgery?
- Now Playing13minSpace is Full of Junk. Here's How to Clean It Up...
- Now Playing15minDark Forest: Should We Not Contact Aliens?
It's Okay to Be Smart
- Now Playing4minHow to See Time Travel!!!
- Now Playing9minIs This A NEW SPECIES?!
- Now Playing3minWhy I PBS
- Now Playing6minWhat is Luck?
- Now Playing5minWhy Music Moves Us
- Now Playing8minWhy Is Blue So Rare In Nature?
- Now Playing3minDoes Evolution Have a Point? 12 Days of Evolution #12
- Now Playing6minCRISPR and the Future of Human Evolution
- Now Playing12minUsing Gene Editing To Repaint Butterfly Wings
- Now Playing6minThe Delicious Science of CHEESE!
- Now Playing6minAttack of the Cosmic Space Junk!
- Now Playing4minThe Ruin and Rise of Monterey Bay
- Now Playing13minDoes Someone Else Have Your Face?
- Now Playing5minHow Many Trees Are There?
- Now Playing6minThe Largest River On Earth Is In The Sky
- Now Playing6minVENOM: Nature's Killer Cocktails
- Now Playing4minWhat's The Loudest Possible Sound?
- Now Playing2minWhy Do Men Have Nipples? - 12 Days of Evolution #7
- Now Playing5minЩΉӨ BЦIƬ ƬΉΣ PYЯΛMIDƧ - Who Built The Pyramids
- Now Playing5minThe Superb Owl!
Origin of Everything
- Now Playing6minWhy Do We Have Middle Names?
- Now Playing8minWhy Do We Wash Our Hands After Going to the Bathroom?
- Now Playing7minWhy Are There So Few Women in Computer Science?
- Now Playing10min6 Weird Facts About the History of Birth Control
- Now Playing10minWhy Do We Have Hobbies?
- Now Playing8minWhy Do Kids Have Their Own Bedrooms?
- Now Playing8minWhere Does the #Hashtag Symbol Come From?
- Now Playing11minModern Warfare and Alien Invasions
- Now Playing7minWhy are 18 Year Olds Considered Adults?
- Now Playing9minCan Tattoos Be Taboo?
- Now Playing11minWhy Does the Government Pay for Art?
- Now Playing10minWhy Does the Government Need to Know My Race?
- Now Playing9minCan Tattoos Be Taboo?
- Now Playing10minHow Did Martin Luther King Jr. Get a Holiday?
- Now Playing9minDoes the Rorschach Inkblot Test Work?
- Now Playing11minWhy Are We Obsessed with Cults?
- Now Playing6minWhy it Was Illegal to be Ugly?
- Now Playing10minWould You Have Joined the American Revolution?
- Now Playing9minWhat If There Were No Taxes?
- Now Playing9minHow Did Edison Invent Christmas Lights?
Two Cents
- Now Playing7minIs the Stock Market Just a Big Casino?
- Now Playing5minBudgeting Basics
- Now Playing6minWhat the Heck Are Mutual Funds?
- Now Playing6minDoes Wealth Make You Meaner?
- Now Playing4minWhat is the DOW?
- Now Playing6minThe Ugly Truth About Airline Miles
- Now Playing6minShould You Break Up With Your Big Bank?
- Now Playing6minWhat is The Cost of Pet Ownership?
- Now Playing6minShould I Buy Bitcoin?
- Now Playing8minAre "Free" Video Games Really Free?
- Now Playing8min5 Ways People Are Dumb About Money
- Now Playing6minHow Do You Actually Buy A House?
- Now Playing6minHacking Your Brain to Get Out Of Debt
- Now Playing6minWhat Are The Most Lucrative Trades?
- Now Playing7minCan You Really Retire in Your 30s?
- Now Playing6minWomen Financial Superpowers
- Now Playing6minMoving Without Spending a Fortune
- Now Playing5minHow Cars Can Keep You Poor
- Now Playing7minLove and Money
- Now Playing6minDo I Need To Buy A House?
Monstrum
- Now Playing8minNuckelavee: Scotland's Skinless Evil Monstrosity
- Now Playing14minThe Evolution of Creepy Dolls
- Now Playing11minThe Fatal Song of the Sirens
- Now Playing8minCreepy Clowns: The Horror Behind the Laughter
- Now Playing12minWas Púca the Nightmare Bunny That Inspired Donnie Darko?
- Now Playing6minRethinking Frankenstein's Monster
- Now Playing11minThe Original Urban Legend: Spring-Heeled Jack
- Now Playing10minWill-o'-the-Wisp: Monstrous Flame or Scientific Phenomenon?
- Now Playing6minThe Origin of Medusa
- Now Playing10minJorōgumo: The Deadly Spider Woman from Yokai Lore
- Now Playing11minBasilisk or Cockatrice? The Mysterious King of Serpents
- Now Playing13minWhat Happened During Our Scary Slumber Party
- Now Playing12minDeath Worms: Fact or Fiction?
- Now Playing15minBaba Yaga: The Ancient Origins of the Famous 'Witch'
- Now Playing8minWerehyena: The Terrifying Shapeshifters of African Lore
- Now Playing13minThe SCP Foundation: Declassified
- Now Playing10minYara-ma-yha-who: Australia's Regurgitating, Blood-Sucking Mo
- Now Playing10minThe Enchanting Fairies of Celtic Lore
- Now Playing10minPontianak: The Vampiric Ghost of Southeast Asia
- Now Playing11minCan All Monsters Be Traced Back to Tiamat?
Eons
- Now Playing10minSomething Has Been Making This Mark For 500 Million Years
- Now Playing9minHow Humans Became (Mostly) Right-Handed
- Now Playing8minThe Rise and Fall of the Tallest Mammal to Walk the Earth
- Now Playing6minHow Did Dinosaurs Get So Huge?
- Now Playing12minHow Humans Lost Their Fur
- Now Playing9minWhen Apes Conquered Europe
- Now Playing9minAre We All Actually Archaea?
- Now Playing12minWhen Bats Took Flight
- Now Playing10minHow Blood Evolved (Many Times)
- Now Playing8minThat Time It Rained for Two Million Years
- Now Playing6minThe Time Terror Birds Invaded
- Now Playing8minHow Two Microbes Changed History
- Now Playing8minThe Case of the Dinosaur Egg Thief
- Now Playing9minHow the Squid Lost Its Shell
- Now Playing6minDimetrodon: Our Most Unlikely Ancestor
- Now Playing11minWhen A Marsupial Became An Apex Predator
- Now Playing10minHow To Survive the Little Ice Age
- Now Playing12minWhen Birds Had Teeth
- Now Playing10minHow Weasels Got Skinny
- Now Playing10minWhen Humans Were Prey
Hot Mess
- Now Playing6minWhat Indigenous Communities Teach Us About Climate Change
- Now Playing10minFeeling Guilty About Climate Change feat. Hank Green
- Now Playing5minWhy Climate Change is Unjust
- Now Playing10minAre You Scared Enough? feat. David Wallace-Wells
- Now Playing6minWhat If We Burned All The World's Fossil Fuels?
- Now Playing10minFeeling Guilty About Climate Change feat. Hank Green
- Now Playing7minWhat's The Best Car For The Climate?
- Now Playing6minHow To Suck Carbon Dioxide Out of the Sky
- Now Playing5minWho Should Pay To Fix Climate Change?
- Now Playing6minHow To Suck Carbon Dioxide Out of the Sky
- Now Playing5minWhy Don't We Hear About the Ozone Hole Anymore?
- Now Playing7minHow To Make Clothes Less Terrible for the Planet
- Now Playing6minCan We Get Solar Power To Everyone Who Wants It?
- Now Playing6minWhat If We Burned All The World's Fossil Fuels?
- Now Playing6minWill Big Oil Have To Pay Up Like Big Tobacco?
- Now Playing5minWho Should Pay To Fix Climate Change?
- Now Playing5minClimate change will push millions out. Where will they go?
- Now Playing8minHow One Conservative Texas Town Went 100% Renewable
- Now Playing6minWill Big Oil Have To Pay Up Like Big Tobacco?
- Now Playing5minWhat's actually the worst greenhouse gas?
Space Time
- Now Playing13minThe Doomsday Argument
- Now Playing10minThe Origin of Our First Interstellar Visitor
- Now Playing13minWhy the Muon g-2 Results Are So Exciting!
- Now Playing10minThe EM Drive: Fact or Fantasy?
- Now Playing16minWhat If Humanity Is Among The First Spacefaring Civilization
- Now Playing11minS2: Should We Build a Dyson Sphere?
- Now Playing9min5 Ways to Stop a Killer Asteroid
- Now Playing18minWhat If There's A Black Hole Inside The Sun?
- Now Playing14minWas the Milky Way a Quasar?
- Now Playing9minHow Gaia Changed Astronomy Forever
- Now Playing13minHow Black Holes Spin Space Time
- Now Playing11minHow to Build a Blackhole
- Now Playing12minWhy We Should Put Rockets On the Moon
- Now Playing11minBlack Holes from the Dawn of Time
- Now Playing17minHow Much Of The Universe Can Humanity Ever See?
- Now Playing13minSupersymmetric Particle Found?
- Now Playing13minNew Results in Quantum Tunneling vs. The Speed of Light
- Now Playing15minIs Dark Energy Getting Stronger?
- Now Playing12minScience of the James Webb Telescope Explained!
- Now Playing16minIs 'Perpetual Motion' Possible with Superfluids?
Beat Making Lab
- Now Playing3minFemale Hip Hop Crew Makes Beats in Senegal
- Now Playing3minExclusive Zenga (Music Video) by Flamme Kapaya
- Now Playing3minBeat Making Challenge #2: Kora Riddim
- Now Playing4minDiablos (music video)
- Now Playing3minEpisode 1: Goma, Congo
- Now Playing3min#FijiChallenge w/ Walshy Fire of Major Lazer
- Now Playing3minProf. Angel Sound Prison Beats Interview
- Now Playing3minSampling w/ Flip Flops and Ski Beatz
- Now Playing3minBehind The Beat: First Beat Making Lab (2011)
- Now Playing4minPortobelo (music video)
- Now Playing4minTrapped In Paradise
- Now Playing2minHealth Worker Beat
- Now Playing3minPanama: Meet the Kids Behind the Beats
- Now Playing5minBehind the Beat: Portobelo
- Now Playing2minWhat's In the Backpack?
- Now Playing3minBeat Making Challenge #1: Accordion Trap
- Now Playing10minHeartbeats of Fiji
- Now Playing2minMashup: National Anthems
- Now Playing2minField Trip: Prison Beats
- Now Playing3minGet Your Drums Right
Infinite Series
- Now Playing8minHow to Divide by "Zero"
- Now Playing14minTopology Riddles | Infinite Series
- Now Playing12minThe Honeycombs of 4-Dimensional Bees ft. Joe Hanson
- Now Playing9minHow Many Humans Have the Same Number of Body Hairs?
- Now Playing10minUnraveling DNA with Rational Tangles
- Now Playing10minThe Assassin Puzzle
- Now Playing9minHow Many Humans Have the Same Number of Body Hairs?
- Now Playing15minDissecting Hypercubes with Pascal's Triangle
- Now Playing11minVoting Systems and the Condorcet Paradox
- Now Playing14minInfinite Chess
- Now Playing11minSingularities Explained
- Now Playing9minBeyond the Golden Ratio
- Now Playing15minArrow's Impossibility Theorem
- Now Playing9minA Hierarchy of Infinities
- Now Playing10minWhat Does It Mean to Be a Number? (The Peano Axioms)
- Now Playing15minArrow's Impossibility Theorem
- Now Playing11minThe Geometry of SET
- Now Playing14minBuilding an Infinite Bridge
- Now Playing13minThe Mathematics of Quantum Computers
- Now Playing8minA Breakthrough in Higher Dimensional Spheres
Idea Channel
- Now Playing9minIs the Universe a Computer?
- Now Playing5minHow will the Animated GIF affect the Presidential Election?
- Now Playing5minIs CSS and Website Design a Fashion Statement?
- Now Playing5minAre Olympic Competitors Geniuses?
- Now Playing6minWhat Do Santa and Wrestling Have In Common?
- Now Playing5minIs Facebook Changing Our Identity?
- Now Playing6minWhat do MP3s and Magic Spells Have in Common?
- Now Playing8minDo Knock-Offs Prove the Value of a Brand?
- Now Playing4minAre Mashups the End of Music Genres?
- Now Playing9minCan Video Games Become the Next Spectator Sport?
- Now Playing3minAn Interview with Minecraft EDU Creator Joel Levin
- Now Playing4minThe Bronies Phenomenon
- Now Playing9minIs a DOS Attack a Weapon?
- Now Playing5minA Visit to Mr. Monfre's Class
- Now Playing5minThere's No Such Thing as Online?!?
- Now Playing5minIs Homestuck the Ulysses of the Internet?
- Now Playing6minThe Retro Awesomeness of Adventure Time
- Now Playing6minShould "Happy Birthday" be Protected by Copyright?
- Now Playing6minIs Doctor Who a Religion?
- Now Playing5minIs William Gibson A Modern Day Oracle?