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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 Playing22minCan AI Help Us Talk to Whales?
- 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?
- Now Playing8minIs the Southern Accent Disappearing?
- Now Playing15minThis Winter Trend Is Overpowering Global Warming
It's Okay to Be Smart
- Now Playing3minDoes The Moon Really Orbit The Earth?
- Now Playing12minEvolution FAILS in the Human Body
- Now Playing7minWhy Don't Woodpeckers Get Concussions?
- Now Playing6minDefusing the Population Bomb
- Now Playing6minThe REAL Physics of Hot Air Balloons!
- Now Playing8minEbola Explained
- Now Playing7minZombie Parasites!
- Now Playing10minThe Impossible Hugeness of Deep Time
- Now Playing6minYour Climate Conscience - feat. Al Gore
- Now Playing4minThere's Science Hidden In Our National Monuments
- Now Playing6minThe Largest River On Earth Is In The Sky
- Now Playing6minWhy It Is What Time It Is (The History of Time)
- Now Playing6minWhat Are Rainbows?
- Now Playing7minWe Got Ants In Our Plants!
- Now Playing2minCarbon and Oxygen and You: Explained
- Now Playing2minAre Humans Still Evolving? 12 Days of Evolution #11
- Now Playing5minThe Scale of the Universe
- Now Playing6minDNA Doesn't Look Like What You Think!
- Now Playing11minThe Dinosaur On Your Thanksgiving Table
- Now Playing6minWho Shares Your Birthday?
Origin of Everything
- Now Playing10minHow Did Makeup Ads Go From Style to Science?
- Now Playing9minWhy Do We Drink Milk in School?
- Now Playing9minWhat If Islam Conquered Europe?
- Now Playing10minWhy Is There a Minimum Wage?
- Now Playing11minWhat is Racial Passing?
- Now Playing5minWhat Was Jesus' Real Name?
- Now Playing7minIs Poisoned Halloween Candy a Myth?
- Now Playing7minHow Your Rubber Ducky Explains Colonialism
- Now Playing7minThe True Origin of Killer Clowns
- Now Playing12minWhy Do Schools Teach Sex Education?
- Now Playing9minIs the Rosa Parks Story True?
- Now Playing7minIs Poisoned Halloween Candy a Myth?
- Now Playing8minWhy Do Women Shave Their Legs?
- Now Playing8minWhy Do Kids Have Their Own Bedrooms?
- Now Playing10minHow WWII Created Godzilla & Mecha Robots
- Now Playing11minWhy Do So Many Religions Have Headwear?
- Now Playing8minWhen DId Marriage Become about Love?
- Now Playing7minWhy Do We Say "Asian American" Not "Oriental"?
- Now Playing8minWhy Do Women Give Birth Lying Down?
- Now Playing8minWhy Was Crossdressing Illegal?
Two Cents
- Now Playing8minAre "Free" Video Games Really Free?
- Now Playing6minShould I Buy Bitcoin?
- Now Playing6minWhat is The Cost of Pet Ownership?
- Now Playing6minHow Do You Actually Buy A House?
- Now Playing8min5 Ways People Are Dumb About Money
- Now Playing5minBudgeting Basics
- Now Playing7minIs the Stock Market Just a Big Casino?
- Now Playing6minThe Ugly Truth About Airline Miles
- Now Playing6minShould You Break Up With Your Big Bank?
- Now Playing4minWhat is the DOW?
- Now Playing6minDoes Wealth Make You Meaner?
- Now Playing6minWhat the Heck Are Mutual Funds?
- Now Playing5minHow Do Your Tax Dollars Get Spent?
- Now Playing8min5 Strange Investor Crazes!
- Now Playing5minHow are credit scores calculated?
- Now Playing5minHow Cars Can Keep You Poor
- Now Playing6minWomen Financial Superpowers
- Now Playing6minMoving Without Spending a Fortune
- Now Playing6minHacking Your Brain to Get Out Of Debt
- Now Playing7minCan You Really Retire in Your 30s?
Monstrum
- Now Playing11minIs Siren Head the Ultimate Modern Monster?
- Now Playing6minThe Original Headless Horseman
- Now Playing17minTrolls: Scandinavia's Malevolent, Magical Outcasts
- Now Playing11minThe Macabre Origins of the Grim Reaper
- Now Playing12minHow Gargoyles Became Monsters
- Now Playing11minWhy Has the Majestic Griffin Been Forgotten?
- Now Playing9minThe Hidden Origins of Nixie, the Scariest Little Mermaid
- Now Playing18minUnlocking the Mystery of Loch Ness
- Now Playing14minHero, Beast, or Both? The Complex Lore of the Centaur
- Now Playing10minA Giant Monster With a Giant Problem
- Now Playing9minKrampus: Origins of the Yuletide Monster
- Now Playing20minWhy George Romero Changed Zombies Forever
- Now Playing12minWho Is This Japanese Yōkai That Is Obsessed With Your Butt?
- Now Playing13minMonster Plants and the Humans who Invent Them
- Now Playing10minHow a Children's Book Introduced Us To Our Inner Demons
- Now Playing17minThe Origins of the Zombie, from Haiti to the U.S.
- Now Playing10minSlender Man: How The Internet Created a Monster
- Now Playing10minEl Silbón: The Deadly Whistler of the Grasslands
- Now Playing13minFire Cat or Fire Cart? The History of Japan's Kasha
- Now Playing11minMari Lwyd: The Skeleton Horse's Deep Past with Christmas
Eons
- 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 Playing10minWhen Fish Wore Armor
- Now Playing8minWhat Happened to the World's Greatest Ape?
- Now Playing8minThat Time It Rained for Two Million Years
- Now Playing8minThe Ghostly Origins of the Big Cats
- Now Playing10minHow 7,000 Years of Epic Floods Changed the World
- Now Playing12minCan We Get DNA From Fossils?
- Now Playing10minThe Facts About Dinosaurs & Feathers
- Now Playing9minWhen Rodents Had Horns
- Now Playing9minThe Invisible Barrier Keeping Two Worlds Apart
- Now Playing11minHow a Mass Extinction Changed Our Brains
- Now Playing13minAn Illustrated History of Dinosaurs
- Now Playing9minThe Fungi That Turned Ants Into Zombies
- Now Playing13minHow Evolution Works (And How We Figured It Out)
- Now Playing5minWhen Whales Walked
- Now Playing11minFrom the Cambrian Explosion to the Great Dying
- Now Playing8minWhen Birds Stopped Flying
Hot Mess
- Now Playing5minWhy Climate Change is Unjust
- Now Playing6minCoral Reefs Are Dying. But They Don't Have To.
- Now Playing4minHow Much Energy Does the Internet Use?
- Now Playing5minWhy We Confuse Weather and Climate
- Now Playing6minWould Your Neighbors Save You From a Flooding Home?
- Now Playing11minClimate Change is Too Big for our Brains feat. Mike Rugnetta
- Now Playing7minWhat's The Best Car For The Climate?
- Now Playing3minCould climate change make you allergic to meat?
- Now Playing5minWhat Happened to Nuclear Power?
- Now Playing4minHow Much Energy Does the Internet Use?
- Now Playing12minOur Food System is Rigged feat. Sheril Kirshenbaum
- Now Playing13minThe Rise of Climate Fiction feat. Lindsay Ellis & Amy Brady
- Now Playing6minCoral Reefs Are Dying. But They Don't Have To.
- Now Playing5minCan Farms and Forests Coexist?
- Now Playing4minWhy Are Hurricanes Getting Stronger?
- 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?
- Now Playing5minWhat Happened to Nuclear Power?
- Now Playing5minWho Should Pay To Fix Climate Change?
Space Time
- Now Playing6minWhat Planet Is Super Mario World?
- Now Playing13minHow Will the Universe End?
- Now Playing13minHow Does Gravity Escape A Black Hole?
- Now Playing11minHow Time Becomes Space Inside a Black Hole
- Now Playing12minLife in the Universe: Crash Course Astronomy #46
- Now Playing11minThe Fate of the First Stars
- Now Playing11minHow Time Becomes Space Inside a Black Hole
- Now Playing13minA Brief History of the Universe: Crash Course Astronomy #44
- Now Playing10minShould Space be Privatized?
- Now Playing12minHawking Radiation
- Now Playing7minShould We Colonize Venus Instead of Mars?
- Now Playing14minThe Evolution of the Modern Milky Way Galaxy
- Now Playing12minHow to See Black Holes + Kugelblitz Challenge Answer
- Now Playing12minAre the Fundamental Constants Changing?
- Now Playing11minHow to Build a Blackhole
- Now Playing11minThe Physics of Life (ft. It's Okay to be Smart & PBS Eons!)
- Now Playing13minWhite Holes
- Now Playing16minFermions Vs. Bosons Explained with Statistical Mechanics!
- Now Playing16minHow Can Matter Be Both Liquid And Gas?
- Now Playing10minScientists Have Detected the First Stars
Beat Making Lab
- Now Playing4minCho Cho Cho (Music Video) filmed in Goma, Congo
- Now Playing2minWalshy Fire [of Major Lazer] Wants Your Riddims
- Now Playing3minBeat Making Challenge #1: Accordion Trap
- Now Playing2minWhat's In the Backpack?
- Now Playing5minBehind the Beat: Portobelo
- Now Playing3minPanama: Meet the Kids Behind the Beats
- Now Playing3minGet Your Drums Right
- Now Playing2minField Trip: Prison Beats
- Now Playing2minMashup: National Anthems
- Now Playing10minHeartbeats of Fiji
- Now Playing4minPortobelo (music video)
- Now Playing3minBehind The Beat: First Beat Making Lab (2011)
- Now Playing3minSampling w/ Flip Flops and Ski Beatz
- Now Playing2minHealth Worker Beat
- Now Playing4minTrapped In Paradise
- Now Playing3minEpisode 1: Goma, Congo
- Now Playing4minDiablos (music video)
- Now Playing3minBeat Making Challenge #2: Kora Riddim
- Now Playing3minExclusive Zenga (Music Video) by Flamme Kapaya
- Now Playing3minFemale Hip Hop Crew Makes Beats in Senegal
Infinite Series
- Now Playing14minTopology Riddles | Infinite Series
- Now Playing9minAssociahedra: The Shapes of Multiplication
- Now Playing14minMaking Probability Mathematical
- Now Playing9minProving Brouwer's Fixed Point Theorem
- Now Playing8minAre Prime Numbers Made Up?
- Now Playing13minNetwork Mathematics and Rival Factions | Infinite Series
- Now Playing11minTopology vs "a" Topology
- Now Playing10minThe Mathematics of Diffie-Hellman Key Exchange
- Now Playing9minCan You Solve the Poison Wine Challenge?
- Now Playing11minVoting Systems and the Condorcet Paradox
- Now Playing12minProving Pick's Theorem
- Now Playing10minUnraveling DNA with Rational Tangles
- Now Playing11minCan We Hear Shapes?
- Now Playing14minInfinite Chess
- Now Playing11minWhat are Numbers Made of?
- Now Playing14minWhy Computers are Bad at Algebra
- Now Playing8minThe Multiplication Multiverse
- Now Playing12minHow Infinity Explains the Finite
- Now Playing11minCan We Hear Shapes?
- Now Playing14minCan We Combine pi & e to Make a Rational Number?
Idea Channel
- Now Playing5minAre Olympic Competitors Geniuses?
- Now Playing5minIs CSS and Website Design a Fashion Statement?
- Now Playing5minHow will the Animated GIF affect the Presidential Election?
- Now Playing9minIs the Universe a Computer?
- Now Playing9minCan Video Games Become the Next Spectator Sport?
- Now Playing4minAre Mashups the End of Music Genres?
- Now Playing8minDo Knock-Offs Prove the Value of a Brand?
- Now Playing6minWhat do MP3s and Magic Spells Have in Common?
- Now Playing5minIs Facebook Changing Our Identity?
- Now Playing6minWhat Do Santa and Wrestling Have In Common?
- Now Playing9minIs a DOS Attack a Weapon?
- Now Playing4minThe Bronies Phenomenon
- Now Playing3minAn Interview with Minecraft EDU Creator Joel Levin
- Now Playing6minIs Doctor Who a Religion?
- Now Playing6minShould "Happy Birthday" be Protected by Copyright?
- Now Playing6minThe Retro Awesomeness of Adventure Time
- Now Playing5minIs Homestuck the Ulysses of the Internet?
- Now Playing5minThere's No Such Thing as Online?!?
- Now Playing5minA Visit to Mr. Monfre's Class
- Now Playing4minAre LOLCats and Internet Memes Art?