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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.![PBS Digital Studios]()
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Now Playing13minWhat's The Universe's Strongest Particle Accelerator?
Now Playing9minThe Surprising Power of Sex in Evolution
Now Playing14minCan Black Holes Unify General Relativity & Quantum Mechanics?
Now Playing11minHas Streaming Made It Harder to Find New Music You Love?
Now Playing21minInterstellar Expansion WITHOUT Faster Than Light Travel
Now Playing9minThe Second Time Sponges Took Over The World
Now Playing12minIs This North American Sea Serpent Real or a Hoax?
Now Playing13minComputers Can Predict When You're Going to Die... Here's How
Now Playing10minHow Do You Preserve a Thousands Year Old Musical Style?
Now Playing14minWhy This Mexican Genre Is Growing As Fast As K-Pop
It's Okay to Be Smart
Now Playing8minAsteroids, Meteors, and Comets... OH MY!!!
Now Playing6minWhat's The Hottest Hot and Coldest Cold?
Now Playing7minMusical Tesla Coils in Slow Motion! Featuring Physics Girl
Now Playing5minЩΉӨ BЦIƬ ƬΉΣ PYЯΛMIDƧ - Who Built The Pyramids
Now Playing9minWhat If You Never Forgot Anything?
Now Playing6minWhy Did We Blow On Nintendo Games?
Now Playing5minThe Cosmic Origins of Earth's Water
Now Playing5min23 Reasons to be Cheerful (Thanks to Science!)
Now Playing3minYour Mom is LITERALLY Part Of You!
Now Playing6minAsteroid Mining: Our Ticket To Living Off Earth?
Now Playing5minClaude Monet Was Half Honeybee
Now Playing8minThe Science of BBQ!!!
Now Playing8minWhere On Earth Do You Weigh The Least?
Now Playing3minWhere Does the Smell of Rain Come From?
Now Playing6minHow Habits are Formed
Now Playing5minWhy Does February Have 28 Days?
Now Playing4minHow Ingenious Animals Have Engineered Air Conditioning
Now Playing5minRemembering Carl Sagan
Now Playing5minHow Much Plastic is in the Ocean?
Now Playing4minWhat Is Fire?
Origin of Everything
Now Playing11minModern Warfare and Alien Invasions
Now Playing7minWhy are 18 Year Olds Considered Adults?
Now Playing9minCan Tattoos Be Taboo?
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 Playing8minWhy Do Kids Have Their Own Bedrooms?
Now Playing8minWhere Does the #Hashtag Symbol Come From?
Now Playing10min6 Weird Facts About the History of Birth Control
Now Playing10minWhy Do We Have Hobbies?
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 Playing8minWhere does the Nuclear Family Come From?
Now Playing11minWhy Do We Have Private Prisons?
Now Playing10minDo Standardized Tests Do More Harm Than Good?
Now Playing10minHow Did Makeup Ads Go From Style to Science?
Now Playing9minHow Did Edison Invent Christmas Lights?
Two Cents
Now Playing7minLove and Money
Now Playing7minIs It Even POSSIBLE to Save for Retirement?
Now Playing6minDo I Need To 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 Playing5minHow Cars Can Keep You Poor
Now Playing6minMoving Without Spending a Fortune
Now Playing6minWomen Financial Superpowers
Now Playing8min5 Strange Investor Crazes!
Now Playing5minHow are credit scores calculated?
Now Playing5minHow Do Your Tax Dollars Get Spent?
Now Playing6minWhat the Heck Are Mutual Funds?
Now Playing6minDoes Wealth Make You Meaner?
Now Playing6minThe Ugly Truth About Airline Miles
Now Playing6minShould You Break Up With Your Big Bank?
Now Playing4minWhat is the DOW?
Now Playing7minIs the Stock Market Just a Big Casino?
Now Playing5minBudgeting Basics
Now Playing8min5 Ways People Are Dumb About Money
Monstrum
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 Playing13minMonster Plants and the Humans who Invent Them
Now Playing12minWho Is This Japanese Yōkai That Is Obsessed With Your Butt?
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 Playing10minEl Silbón: The Deadly Whistler of the Grasslands
Now Playing10minSlender Man: How The Internet Created a Monster
Now Playing11minIs Siren Head the Ultimate Modern Monster?
Now Playing6minThe Original Headless Horseman
Now Playing17minTrolls: Scandinavia's Malevolent, Magical Outcasts
Now Playing12minHow Gargoyles Became Monsters
Now Playing11minThe Macabre Origins of the Grim Reaper
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 Playing12minWhat Hellhounds Reveal about Humans' Oldest Companion
Now Playing12minAre Cyborgs Really Monsters?
Eons
Now Playing8minHow Did Our Most Famous Ancestor Really Die?
Now Playing10minThese Creatures Were Darwin's Greatest Enemy
Now Playing10minThe Neanderthals That Taught Us About Humanity
Now Playing10minWhen We First Made Tools
Now Playing5minWhen Whales Walked
Now Playing10minWhen Humans Were Prey
Now Playing10minHow Weasels Got Skinny
Now Playing12minWhen Birds Had Teeth
Now Playing12minWhere Are All the Medium-Sized Dinosaurs?
Now Playing10minThe World Before Plate Tectonics
Now Playing8minThe Hellacious Lives of the "Hell Pigs"
Now Playing8minInside the Dinosaur Library
Now Playing8minDo Thunderbeasts Prove Giant Animals Are Inevitable?
Now Playing12minWhen Antarctica Was Green
Now Playing12minThe Humans That Lived Before Us
Now Playing10minThat Time the American West Blew Up
Now Playing12minAnimals Are Older Than We Thought
Now Playing10minHow Dogs (Eventually) Became Our Best Friends
Now Playing9minAre We All Actually Archaea?
Now Playing9minWhen Apes Conquered Europe
Hot Mess
Now Playing5minWe've Ignored Climate Change For More Than a Century
Now Playing5minBeef Is Bad For The Climate. Can We Make It Better?
Now Playing5minWhat the Cutest Animal Can Teach Us About Saving Ourselves
Now Playing6minWhat if Carbon Emissions Stopped Tomorrow?
Now Playing5minHow A Sticker Kept 3 Billion Tons of CO2 Out of The Air
Now Playing5minWhat Can You Actually Do About Climate Change?
Now Playing5minWhat's actually the worst greenhouse gas?
Now Playing4minWhy Are Hurricanes Getting Stronger?
Now Playing5minWhat the Cutest Animal Can Teach Us About Saving Ourselves
Now Playing5minWe've Ignored Climate Change For More Than a Century
Now Playing6minWhat if Carbon Emissions Stopped Tomorrow?
Now Playing5minClimate change will push millions out. Where will they go?
Now Playing5minBeef Is Bad For The Climate. Can We Make It Better?
Now Playing11minClimate Change is Too Big for our Brains feat. Mike Rugnetta
Now Playing6minWhat Indigenous Communities Teach Us About Climate Change
Now Playing7minHow To Make Clothes Less Terrible for the Planet
Now Playing5minHow A Sticker Kept 3 Billion Tons of CO2 Out of The Air
Now Playing8minHow One Conservative Texas Town Went 100% Renewable
Now Playing9minHow to Talk About Climate Change
Now Playing3minCould climate change make you allergic to meat?
Space Time
Now Playing15minWhat If Alien Life Were Silcon-Based?
Now Playing14minWhat If Charge is NOT Fundamental?
Now Playing7minIs It Irrational to Believe in Aliens?
Now Playing7minWhat Will Destroy Planet Earth?
Now Playing14minHow Magnetism Shapes The Universe
Now Playing10minExtinction by Gamma-Ray Burst
Now Playing14minWhy Quantum Computing Requires Quantum Cryptography
Now Playing9minWill Starshot's Insterstellar Journey Succeed?
Now Playing14minHow to Communicate Across the Quantum Multiverse
Now Playing11minS2: Juno to Reveal Jupiter's Violent Past
Now Playing13minSupersymmetric Particle Found?
Now Playing9minWill Starshot's Insterstellar Journey Succeed?
Now Playing17minWhat If Black Holes Are Dark Energy?
Now Playing16minWhy String Theory is Wrong
Now Playing9minIs There a Fifth Fundamental Force? + Quantum Eraser Answer
Now Playing13minThe Cosmic Dark Ages
Now Playing14minWhat Caused the Big Bang?
Now Playing11minWhy Haven't We Found Alien Life?
Now Playing16minThe New Science of Moon Formation
Now Playing9minWhen Time Breaks Down
Beat Making Lab
Now Playing3minProf. Angel Sound Prison Beats Interview
Now Playing3min#FijiChallenge w/ Walshy Fire of Major Lazer
Now Playing3minEpisode 1: Goma, Congo
Now Playing4minDiablos (music video)
Now Playing3minExclusive Zenga (Music Video) by Flamme Kapaya
Now Playing3minBeat Making Challenge #2: Kora Riddim
Now Playing3minFemale Hip Hop Crew Makes Beats in Senegal
Now Playing2minHealth Worker Beat
Now Playing4minTrapped In Paradise
Now Playing4minPortobelo (music video)
Now Playing3minBehind The Beat: First Beat Making Lab (2011)
Now Playing3minSampling w/ Flip Flops and Ski Beatz
Now Playing3minGet Your Drums Right
Now Playing2minField Trip: Prison Beats
Now Playing2minMashup: National Anthems
Now Playing10minHeartbeats of Fiji
Now Playing3minBeat Making Challenge #1: Accordion Trap
Now Playing5minBehind the Beat: Portobelo
Now Playing2minWhat's In the Backpack?
Now Playing3minPanama: Meet the Kids Behind the Beats
Infinite Series
Now Playing11minWhat are Numbers Made of?
Now Playing14minWhy Computers are Bad at Algebra
Now Playing14minInfinite Chess
Now Playing11minCan We Hear Shapes?
Now Playing8minA Breakthrough in Higher Dimensional Spheres
Now Playing14minSolving the Wolverine Problem with Graph Coloring
Now Playing10minInstant Insanity Puzzle
Now Playing11minCan We Hear Shapes?
Now Playing14minCan We Combine pi & e to Make a Rational Number?
Now Playing8minThe Multiplication Multiverse
Now Playing12minHow Infinity Explains the Finite
Now Playing8minAre Prime Numbers Made Up?
Now Playing14minMaking Probability Mathematical
Now Playing9minProving Brouwer's Fixed Point Theorem
Now Playing9minAssociahedra: The Shapes of Multiplication
Now Playing14minTopology Riddles | Infinite Series
Now Playing11minVoting Systems and the Condorcet Paradox
Now Playing12minProving Pick's Theorem
Now Playing10minUnraveling DNA with Rational Tangles
Now Playing10minThe Mathematics of Diffie-Hellman Key Exchange
Idea Channel
Now Playing4minFrom Sherlock Holmes to 50 Shades of Grey
Now Playing6minAre Virtual Video Game Economies Becoming Real?
Now Playing5minAre Memes and Internet Culture Creating a Singularity?
Now Playing5minIs Homestuck the Ulysses of the Internet?
Now Playing5minIs Dubstep the New Musical Avant-Garde?
Now Playing5minDo We Want the World to End?
Now Playing8minIs Buying Call of Duty a Moral Choice?
Now Playing5minWill Space Travel Save Us All?
Now Playing8minWhy Do We Love Zombies?
Now Playing5minNicolas Cage, Taoism, and YOLO
Now Playing5minIs Dubstep the New Musical Avant-Garde?
Now Playing4minIs Instagram Revolutionizing Photography?
Now Playing8minIs Sad Music Actually Sad?
Now Playing6minIs Doctor Who a Religion?
Now Playing9minDoes Math Really Exist?
Now Playing3minAre Holograms Nostalgia or a New Form of Art?
Now Playing3minAre Holograms Nostalgia or a New Form of Art?
Now Playing6minIs Futurama the Best Argument Against Transhumanism?
Now Playing3minSuper Mario Brothers as Surrealist Art?
Now Playing6minAre Virtual Video Game Economies Becoming Real?