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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 Playing14minOur Understanding of Floods is ALL Wrong
- Now Playing22minCan AI Help Us Talk to Whales?
- Now Playing16minWhy Is The World Rushing Back To The Moon?
- Now Playing11minThe Hazy Evolution of Cannabis
- Now Playing11minMeasuring the Universe With a 14-Billion Light-Year Ruler
- 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?
It's Okay to Be Smart
- Now Playing9minWhat If You Never Forgot Anything?
- Now Playing6minWhy Did We Blow On Nintendo Games?
- Now Playing8minAsteroids, Meteors, and Comets... OH MY!!!
- Now Playing7minMusical Tesla Coils in Slow Motion! Featuring Physics Girl
- Now Playing6minWhat's The Hottest Hot and Coldest Cold?
- Now Playing5minЩΉӨ BЦIƬ ƬΉΣ PYЯΛMIDƧ - Who Built The Pyramids
- Now Playing5minThe Cosmic Origins of Earth's Water
- Now Playing5min23 Reasons to be Cheerful (Thanks to Science!)
- Now Playing6minAsteroid Mining: Our Ticket To Living Off Earth?
- Now Playing3minYour Mom is LITERALLY Part Of You!
- Now Playing8minThe Science of BBQ!!!
- Now Playing5minClaude Monet Was Half Honeybee
- Now Playing8minWhere On Earth Do You Weigh The Least?
- Now Playing6minHow Habits are Formed
- Now Playing5minWhy Does February Have 28 Days?
- Now Playing4minHow Ingenious Animals Have Engineered Air Conditioning
- Now Playing3minWhere Does the Smell of Rain Come From?
- Now Playing5minHow Many Smells Can You Smell?
- Now Playing4minWhat Is Fire?
- Now Playing5minRemembering Carl Sagan
Origin of Everything
- Now Playing8minWhy Do We Wash Our Hands After Going to the Bathroom?
- Now Playing7minWhy Are There So Few Women in Computer Science?
- Now Playing6minWhy Do We Have Middle Names?
- 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 Playing10minWhy Does the Government Need to Know My Race?
- Now Playing11minWhy Does the Government Pay for Art?
- Now Playing9minCan Tattoos Be Taboo?
- Now Playing10minHow Did Martin Luther King Jr. Get a Holiday?
- Now Playing9minDoes the Rorschach Inkblot Test Work?
- Now Playing11minModern Warfare and Alien Invasions
- Now Playing7minWhy are 18 Year Olds Considered Adults?
- Now Playing9minCan Tattoos Be Taboo?
- Now Playing6minWhy it Was Illegal to be Ugly?
- Now Playing10minWould You Have Joined the American Revolution?
- Now Playing11minWhy Are We Obsessed with Cults?
- Now Playing9minWhat If There Were No Taxes?
- Now Playing10minThe Origin of Race in the USA
Two Cents
- Now Playing8min5 Ways People Are Dumb About Money
- Now Playing6minHow Do You Actually Buy A House?
- Now Playing6minWhat is The Cost of Pet Ownership?
- Now Playing6minShould I Buy Bitcoin?
- Now Playing8minAre "Free" Video Games Really Free?
- Now Playing6minWhat the Heck Are Mutual Funds?
- Now Playing6minDoes Wealth Make You Meaner?
- Now Playing4minWhat is the DOW?
- Now Playing6minShould You Break Up With Your Big Bank?
- Now Playing6minThe Ugly Truth About Airline Miles
- Now Playing7minIs the Stock Market Just a Big Casino?
- Now Playing5minBudgeting Basics
- Now Playing5minHow are credit scores calculated?
- Now Playing8min5 Strange Investor Crazes!
- Now Playing5minHow Do Your Tax Dollars Get Spent?
- Now Playing7minLove and Money
- Now Playing6minDo I Need To Buy A House?
- Now Playing7minIs It Even POSSIBLE to Save for Retirement?
- Now Playing6minWhat Are The Most Lucrative Trades?
- Now Playing7minCan You Really Retire in Your 30s?
Monstrum
- 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 Playing6minRethinking Frankenstein's Monster
- Now Playing11minThe Original Urban Legend: Spring-Heeled Jack
- Now Playing12minWas Púca the Nightmare Bunny That Inspired Donnie Darko?
- Now Playing8minCreepy Clowns: The Horror Behind the Laughter
- Now Playing14minThe Evolution of Creepy Dolls
- Now Playing8minNuckelavee: Scotland's Skinless Evil Monstrosity
- Now Playing11minThe Fatal Song of the Sirens
- Now Playing17minModern Zombies: The Rebirth of the Undead
- Now Playing10minIs Yuki-onna the Most Terrifying Snow Monster?
- Now Playing13minLeprechaun: From Gold-Loving Cobbler to Cultural Icon
- Now Playing12minThe Origins of 'Big Bug' Science Fiction
- Now Playing11minCan All Monsters Be Traced Back to Tiamat?
- Now Playing10minHow Bloody Mary Turns Fear Into Fun
- Now Playing10minThe Enchanting Fairies of Celtic Lore
- Now Playing10minPontianak: The Vampiric Ghost of Southeast Asia
- Now Playing13minThe SCP Foundation: Declassified
Eons
- Now Playing5minWhen Whales Walked
- Now Playing8minWhen Birds Stopped Flying
- Now Playing11minFrom the Cambrian Explosion to the Great Dying
- Now Playing12minWhen a Billion Years Disappeared
- Now Playing9minThe Rise and Fall of the Bone-Crushing Dogs
- Now Playing6minDimetrodon: Our Most Unlikely Ancestor
- Now Playing12minWhat Was the Ancestor of Everything?
- Now Playing10minWhy The Paleo Diet Couldn't Save The Neanderthals
- Now Playing11minWhen We First Walked
- Now Playing10minWhen Humans Were Prey
- Now Playing10minLife, Sex & Death Among the Dire Wolves
- Now Playing14minThe History of Climate Cycles (and the Woolly Rhino)
- Now Playing9minWhen Fish First Breathed Air
- Now Playing11minWhy Megalodon (Definitely) Went Extinct
- Now Playing6minThe Time Terror Birds Invaded
- Now Playing8minWhen Dinosaur Look-Alikes Ruled the Earth
- Now Playing7minWhen Giant Deer Roamed Eurasia
- Now Playing8minHow Plate Tectonics Gave Us Seahorses
- Now Playing8minWhat Happened to the World's Greatest Ape?
- Now Playing8minThat Time It Rained for Two Million Years
Hot Mess
- Now Playing6minWhat Indigenous Communities Teach Us About Climate Change
- Now Playing5minWhy Climate Change is Unjust
- Now Playing10minAre You Scared Enough? feat. David Wallace-Wells
- Now Playing10minFeeling Guilty About Climate Change feat. Hank Green
- Now Playing6minWhat If We Burned All The World's Fossil Fuels?
- Now Playing6minHow To Suck Carbon Dioxide Out of the Sky
- Now Playing10minFeeling Guilty About Climate Change feat. Hank Green
- Now Playing7minWhat's The Best Car For The Climate?
- Now Playing5minWhy Don't We Hear About the Ozone Hole Anymore?
- Now Playing7minHow To Make Clothes Less Terrible for the Planet
- Now Playing5minWho Should Pay To Fix Climate Change?
- Now Playing6minHow To Suck Carbon Dioxide Out of the Sky
- Now Playing6minWill Big Oil Have To Pay Up Like Big Tobacco?
- Now Playing6minCan We Get Solar Power To Everyone Who Wants It?
- Now Playing6minWhat If We Burned All The World's Fossil Fuels?
- Now Playing5minWho Should Pay To Fix Climate Change?
- Now Playing5minClimate change will push millions out. Where will they go?
- Now Playing5minWhat Happened to Nuclear Power?
- Now Playing8minHow One Conservative Texas Town Went 100% Renewable
- Now Playing6minWill Big Oil Have To Pay Up Like Big Tobacco?
Space Time
- Now Playing15minPerpetual Motion From Negative Mass?
- Now Playing11minFirst Detection of Life
- Now Playing14minDoes Life Need a Multiverse to Exist?
- Now Playing13minIs Time Travel Impossible?
- Now Playing14minAre Virtual Particles A New Layer of Reality?
- Now Playing15minWhat If the Galactic Habitable Zone LIMITS Intelligent Life?
- Now Playing12minAnti-Matter and Quantum Relativity
- Now Playing12minThe Real Science of the EHT Black Hole
- Now Playing11minMartian Evolution
- Now Playing16minGalaxies, part 2: Crash Course Astronomy #39
- Now Playing5minCould NASA Start the Zombie Apocalypse?
- Now Playing20minDoes Many Worlds Explain Quantum Probabilities?
- Now Playing8minDoes Dark Matter BREAK Physics?
- Now Playing8minKronos: Devourer Of Worlds
- Now Playing14minThe NEW Warp Drive Possibilities
- Now Playing13minIs an Ice Age Coming?
- Now Playing11minWhat Happened Before the Big Bang?
- Now Playing8minWhat Happens At The Edge Of The Universe?
- Now Playing10minLife on Europa?
- Now Playing13minAre We Living in an Ancestor Simulation? ft. Neil deGrasse T
Beat Making Lab
- Now Playing2minWalshy Fire [of Major Lazer] Wants Your Riddims
- Now Playing4minCho Cho Cho (Music Video) filmed in Goma, Congo
- Now Playing10minHeartbeats of Fiji
- Now Playing2minMashup: National Anthems
- Now Playing2minField Trip: Prison Beats
- Now Playing3minGet Your Drums Right
- 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 Playing4minTrapped In Paradise
- Now Playing2minHealth Worker Beat
- Now Playing3minSampling w/ Flip Flops and Ski Beatz
- Now Playing3minBehind The Beat: First Beat Making Lab (2011)
- Now Playing4minPortobelo (music video)
- Now Playing3min#FijiChallenge w/ Walshy Fire of Major Lazer
- Now Playing3minProf. Angel Sound Prison Beats Interview
- Now Playing3minFemale Hip Hop Crew Makes Beats in Senegal
- Now Playing3minBeat Making Challenge #2: Kora Riddim
- Now Playing3minExclusive Zenga (Music Video) by Flamme Kapaya
Infinite Series
- Now Playing9minA Hierarchy of Infinities
- Now Playing15minArrow's Impossibility Theorem
- Now Playing9minBeyond the Golden Ratio
- Now Playing11minSingularities Explained
- Now Playing11minVoting Systems and the Condorcet Paradox
- Now Playing14minInfinite Chess
- Now Playing15minDissecting Hypercubes with Pascal's Triangle
- Now Playing9minHow Many Humans Have the Same Number of Body Hairs?
- Now Playing10minThe Assassin Puzzle
- Now Playing9minHow Many Humans Have the Same Number of Body Hairs?
- Now Playing10minUnraveling DNA with Rational Tangles
- Now Playing14minTopology Riddles | Infinite Series
- Now Playing12minThe Honeycombs of 4-Dimensional Bees ft. Joe Hanson
- Now Playing8minHow to Divide by "Zero"
- Now Playing14minHow Big are All Infinities Combined? (Cantor's Paradox)
- Now Playing9minThis Video was Not Encrypted with RSA
- Now Playing13minWhat is a Random Walk?
- Now Playing16minHow to Break Cryptography
- Now Playing14minWhy Computers are Bad at Algebra
- Now Playing17minSplitting Rent with Triangles
Idea Channel
- Now Playing8minIs a Tagged Instagram More Than Just a Photo?
- Now Playing9minWill Kickstarter Replace Hollywood?
- Now Playing5minNicolas Cage, Taoism, and YOLO
- Now Playing3minIs the Web Browser Replacing the Art Gallery?
- Now Playing4minFrom Sherlock Holmes to 50 Shades of Grey
- Now Playing4minHas the Microsoft Kinect revolutionized art?
- Now Playing4minIs Twitter the Newest Form of Literature?
- Now Playing4minAre Mashups the End of Music Genres?
- Now Playing5minIs William Gibson A Modern Day Oracle?
- Now Playing4minAre LOLCats and Internet Memes Art?
- Now Playing4minRussian Meteorites and Surveillance Culture
- Now Playing7minHow are Justin Bieber, Franz Liszt and Jerusalem Connected?
- Now Playing5minAre Olympic Competitors Geniuses?
- Now Playing5minIs William Gibson A Modern Day Oracle?
- Now Playing6minIs Minecraft the Ultimate Educational Tool?
- Now Playing5minAre Memes and Internet Culture Creating a Singularity?
- Now Playing9minIs a DOS Attack a Weapon?
- Now Playing4minThe Bronies Phenomenon
- Now Playing3minAn Interview with Minecraft EDU Creator Joel Levin
- Now Playing6minThe Retro Awesomeness of Adventure Time