Free movies
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.
On now
Up next
Latest
- Now Playing10minWhat Do DJs Even Do?
- Now Playing27minNot "Business As Usual"
- Now Playing27minClimate Crossroads
- Now Playing27minWater Whiplash
- Now Playing27minAre We At The Tipping Point?
- Now Playing27minAdapt or Leave?
- Now Playing27minThe Heat is On
- Now Playing13minWhy Manticore Is a Dungeons & Dragons Legend
- Now Playing11minHow the Himalayas Changed the World
- Now Playing11minWhere Did the Moon Come From?
It's Okay to Be Smart
- Now Playing8minIs Ultron Inevitable?
- Now Playing5minAre You Smarter Than A Slime Mold?
- Now Playing4minHow The Elements Got Their Names
- Now Playing4minWhose Air do we Share?
- Now Playing4minCuttlefish: Tentacles In Disguise
- Now Playing7minWhy Do You Love Your Family?
- Now Playing5minHow Science Defines A Year
- Now Playing5minYour #ScienceWoman Heroes
- Now Playing16minTrying a Thanksgiving Feast Made from Bugs
- Now Playing3minBuilding Curiosity
- Now Playing6minWhy Don't Other Animals Wear Glasses?
- Now Playing10minIs There Life on Earth?
- Now Playing7minInside the World of Fire Ants!
- Now Playing8min20 MILLION Year-Old Spider!! Unweaving Spider Silk
- Now Playing6minWhy Salt & Pepper?
- Now Playing6minHow Atom Bombs Can Uncover Forged Art
- Now Playing7minThe Strange Science of the Placebo Effect
- Now Playing7minEngines of Destruction: How Hurricanes Work
- Now Playing5minThe Cosmic Origins of Earth's Water
- Now Playing6minInside an ICE CAVE! - Nature's Most Beautiful Blue
Origin of Everything
- Now Playing7minHow Your Rubber Ducky Explains Colonialism
- Now Playing10minIs Breakfast the Most Important Meal?
- Now Playing10minWhy was Pink for Boys and Blue for Girls?
- Now Playing8minWhy is there a North and South Korea?
- Now Playing7minHow Columbus Invented Cannibals
- Now Playing7minHow did Makeup, WWII, & Communism Create U.S. Healthcare?
- Now Playing12minWhy Do Schools Teach Sex Education?
- Now Playing8minWhy Was Crossdressing Illegal?
- Now Playing8minWhy Do Women Give Birth Lying Down?
- Now Playing7minWhy Do We Say "Asian American" Not "Oriental"?
- Now Playing8minWhen DId Marriage Become about Love?
- Now Playing11minWhy Do We Have Private Prisons?
- Now Playing8minWhy Do People Have Pets?
- Now Playing10minWhat is Ethnicity?
- Now Playing10minWhy Does the Government Need to Know My Race?
- Now Playing8minWhy Do We Get Grades in School?
- Now Playing7minWhen Men Wore High Heels
- Now Playing12minWhy Doesn't the US Have Paid Parental Leave?
- Now Playing10minHow Did Martin Luther King Jr. Get a Holiday?
- Now Playing8minWhy Do Women Give Birth Lying Down?
Two Cents
- Now Playing6minHow to Ask for a Raise
- Now Playing7minWhat's The Real Cost of Dying?
- Now Playing7minShould I Invest In Cannabis Stocks?
- Now Playing6minTop 5 Biggest Financial Scams
- Now Playing7minWhy It's More Expensive To Be Poor
- Now Playing6minI'm Young & Healthy, Can I Skip Health Insurance?
- Now Playing9minHow Smart Entrepreneurs Think About PRICES!
- Now Playing7minFighting the Financial Pitfalls of the Supermarket
- Now Playing5minDo Kids Need to Learn About Money?
- Now Playing7minHow Retailers Stalk You Online
- Now Playing5minInsta-Everything
- Now Playing7minIs Your Side Hustle Hustling You?
- Now Playing7minWhich College Majors Give the Most Bang for Your Buck?
- Now Playing6minIs My Identity Safe From Hackers?
- Now Playing6minFighting the Wedding Industrial Complex
- Now Playing7minMoney, A Global Game of Trust
- Now Playing6minDo I Need To Buy A House?
- Now Playing7minIs It Even POSSIBLE to Save for Retirement?
- Now Playing7minLove and Money
- Now Playing6minMoving Without Spending a Fortune
Monstrum
- Now Playing10minPontianak: The Vampiric Ghost of Southeast Asia
- Now Playing10minThe Enchanting Fairies of Celtic Lore
- Now Playing13minThe SCP Foundation: Declassified
- Now Playing13minWhat Happened During Our Scary Slumber Party
- Now Playing12minDeath Worms: Fact or Fiction?
- Now Playing8minWerehyena: The Terrifying Shapeshifters of African Lore
- Now Playing15minBaba Yaga: The Ancient Origins of the Famous 'Witch'
- Now Playing10minYara-ma-yha-who: Australia's Regurgitating, Blood-Sucking Mo
- Now Playing12minIs This North American Sea Serpent Real or a Hoax?
- Now Playing11minLa Lechuza: The Shape-Shifting Witch-Owl
- Now Playing11minKing Kong pt. 2
- 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 Playing12minWas Púca the Nightmare Bunny That Inspired Donnie Darko?
- Now Playing8minCreepy Clowns: The Horror Behind the Laughter
- Now Playing9minThe Mother of Vengeance: Grendel's Mom
Eons
- Now Playing10minWhen Humans Were Prey
- Now Playing5minWhen Whales Walked
- Now Playing12minWhen Birds Had Teeth
- Now Playing10minHow Weasels Got Skinny
- Now Playing8minHow Did Our Most Famous Ancestor Really Die?
- Now Playing10minWhen We First Made Tools
- Now Playing10minThe Neanderthals That Taught Us About Humanity
- Now Playing10minThese Creatures Were Darwin's Greatest Enemy
- Now Playing12minThe Humans That Lived Before Us
- Now Playing10minHow Dogs (Eventually) Became Our Best Friends
- Now Playing12minAnimals Are Older Than We Thought
- Now Playing10minThat Time the American West Blew Up
- Now Playing8minThe Hellacious Lives of the "Hell Pigs"
- Now Playing10minThe World Before Plate Tectonics
- Now Playing12minWhere Are All the Medium-Sized Dinosaurs?
- Now Playing12minWhen Antarctica Was Green
- Now Playing8minDo Thunderbeasts Prove Giant Animals Are Inevitable?
- Now Playing8minInside the Dinosaur Library
- Now Playing9minHow Humans Became (Mostly) Right-Handed
- Now Playing12minWhen India Was An Island
Hot Mess
- Now Playing6minWhat Indigenous Communities Teach Us About Climate Change
- Now Playing11minClimate Change is Too Big for our Brains feat. Mike Rugnetta
- Now Playing5minBeef Is Bad For The Climate. Can We Make It Better?
- Now Playing5minClimate change will push millions out. Where will they go?
- Now Playing6minWhat if Carbon Emissions Stopped Tomorrow?
- Now Playing5minWe've Ignored Climate Change For More Than a Century
- Now Playing4minWhy Are Hurricanes Getting Stronger?
- Now Playing5minWhat the Cutest Animal Can Teach Us About Saving Ourselves
- Now Playing5minWhat's actually the worst greenhouse gas?
- Now Playing5minWhat Can You Actually Do About Climate Change?
- Now Playing5minHow A Sticker Kept 3 Billion Tons of CO2 Out of The Air
- Now Playing6minWhat if Carbon Emissions Stopped Tomorrow?
- Now Playing5minWhat the Cutest Animal Can Teach Us About Saving Ourselves
- Now Playing5minBeef Is Bad For The Climate. Can We Make It Better?
- Now Playing5minWe've Ignored Climate Change For More Than a Century
- Now Playing4minCould Space Mirrors Cool The Globe?
- Now Playing6minCan We Get Solar Power To Everyone Who Wants It?
- Now Playing5minWhy Don't We Hear About the Ozone Hole Anymore?
- Now Playing10minThe Link Between Extreme Weather and Climate Change
- Now Playing5minCan Farms and Forests Coexist?
Space Time
- Now Playing13minDid Dark Energy Just Disappear?
- Now Playing9minThe Real Meaning of E=mc²
- Now Playing15minWhy Is 1/137 One of the Greatest Unsolved Problems
- Now Playing13minHorizon Radiation
- Now Playing11minS2: How the Quantum Eraser Rewrites the Past
- Now Playing13minQuantum Theory's Most Incredible Prediction
- Now Playing15minDid Life on Earth Come from Space?
- Now Playing8minWhat Happens At The Edge Of The Universe?
- Now Playing15minThe Holographic Universe Explained
- Now Playing9minThe Great American Eclipse
- Now Playing9minWhy the Big Bang Definitely Happened
- Now Playing15minIs Interstellar Travel Impossible?
- Now Playing17minHow Does the Earth Really Move Through The Galaxy?
- Now Playing14minWhy String Theory is Right
- Now Playing16minWhat If Gravity is Not A Fundamental Force?
- Now Playing16minWhat If The Speed of Light is NOT CONSTANT?
- Now Playing12minThe Missing Mass Mystery
- Now Playing11minS2: The Quantum Experiment that Broke Reality
- Now Playing9min5 Ways to Stop a Killer Asteroid
- Now Playing11minWill A New Neutrino Change The Standard Model?
Beat Making Lab
- Now Playing4minCho Cho Cho (Music Video) filmed in Goma, Congo
- Now Playing2minWalshy Fire [of Major Lazer] Wants Your Riddims
- Now Playing3minPanama: Meet the Kids Behind the Beats
- Now Playing3minBeat Making Challenge #1: Accordion Trap
- Now Playing5minBehind the Beat: Portobelo
- Now Playing2minWhat's In the Backpack?
- Now Playing2minMashup: National Anthems
- Now Playing10minHeartbeats of Fiji
- Now Playing3minGet Your Drums Right
- Now Playing2minField Trip: Prison Beats
- Now Playing3minSampling w/ Flip Flops and Ski Beatz
- Now Playing4minPortobelo (music video)
- Now Playing3minBehind The Beat: First Beat Making Lab (2011)
- Now Playing4minTrapped In Paradise
- Now Playing2minHealth Worker Beat
- Now Playing3minBeat Making Challenge #2: Kora Riddim
- Now Playing3minExclusive Zenga (Music Video) by Flamme Kapaya
- Now Playing3minFemale Hip Hop Crew Makes Beats in Senegal
- Now Playing3minEpisode 1: Goma, Congo
- Now Playing4minDiablos (music video)
Infinite Series
- Now Playing14minInfinite Chess
- Now Playing11minWhat are Numbers Made of?
- Now Playing14minWhy Computers are Bad at Algebra
- Now Playing11minCan We Hear Shapes?
- Now Playing10minInstant Insanity Puzzle
- Now Playing14minSolving the Wolverine Problem with Graph Coloring
- Now Playing8minA Breakthrough in Higher Dimensional Spheres
- Now Playing12minHow Infinity Explains the Finite
- Now Playing8minThe Multiplication Multiverse
- Now Playing14minCan We Combine pi & e to Make a Rational Number?
- Now Playing11minCan We Hear Shapes?
- Now Playing9minProving Brouwer's Fixed Point Theorem
- Now Playing14minMaking Probability Mathematical
- Now Playing8minAre Prime Numbers Made Up?
- Now Playing14minTopology Riddles | Infinite Series
- Now Playing9minAssociahedra: The Shapes of Multiplication
- Now Playing9minCan You Solve the Poison Wine Challenge?
- Now Playing10minThe Mathematics of Diffie-Hellman Key Exchange
- Now Playing10minUnraveling DNA with Rational Tangles
- Now Playing12minProving Pick's Theorem
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 Playing4minThe Bronies Phenomenon
- Now Playing3minAn Interview with Minecraft EDU Creator Joel Levin
- 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 Playing4minAre Mashups the End of Music Genres?