Be Smart.
We give you deep answers to simple questions about science and the rest of the universe. And also dad jokes. Be Smart is hosted by Joe Hanson, PhD. He's a molecular biologist and an award-winning science communicator and journalist
Why Do We Smile?
Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Several jokes were harmed in the making of this video Don’t miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓ More info and sources below ↓ T-SHIRTS! http://dftba.com/besmart Laughing is a universal human behavior, one that transcends borders of language and culture. But it's also REALLY WEIRD. Why do we do it? The answer has less to do with humor than you might think Learn more: "Laughter: A Scientific Investigation" by Robert Provine http://amzn.to/1fzZQLy "Ha...
I Tried Eating Bugs… Here's What I Learned
PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY ↓ More info and sources below ↓ Follow me to The Brain Scoop: https://youtu.be/6vOzt-YQjIA We’re on PATREON now! Join the community ►► https://www.patreon.com/itsokaytobesmart SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub People say insects are the food of the future. They’re more environmentally sustainable and more humane than other sources of animal protein. Can they really catch on in western diets? I’m a pretty adventurous eater, but I’ve never actually trie...
Where Did Life Come From? (feat. PBS Space Time and Eons!)
Follow us to PBS Space Time: https://youtu.be/GcfLZSL7YGw And Eons: https://youtu.be/pk213XSSktQ ↓↓↓ More origin of life info and sources below ↓↓↓ The origin of life is one of the most important mysteries in all of science. When did life begin? How did life first evolve from chemistry? Where did life get started? In some primordial soup or somewhere else? Let’s journey back to the origin of life, as best as we know it, from the RNA world do the last universal common ancestor of everything alive today. Don’t miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs...
Why Is Blue So Rare In Nature?
Duh, except for the sky… and the ocean… Don't miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ Among living things, the color blue is oddly rare. Blue rocks, blue sky, blue water, sure. But blue animals? They are few and far between. And the ones that do make blue? They make it in some very strange and special ways compared to other colors. In this video, we'll look at some very cool butterflies to help us learn how living things make blue, and why this beautiful hue is so rare in nature. SPECIAL THANKS: Smithsonian...
Are You Afraid of Holes?
You can check out our sponsor LastPass here: http://bit.ly/2E9zcY6 SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ Honeycomb. Strawberries. Flower pods. Some people find these things incredibly scary. We call this extreme fear trypophobia. But why does it exist? REFERENCES: http://bit.ly/2NvhWki ----------- FOLLOW US: Twitter: @DrJoeHanson @okaytobesmart Instagram: @DrJoeHanson Merch: https://store.dftba.com/collections/its-okay-to-be-smart Facebook: http://www.facebook.com/itsokaytobesmart BOOKS WE’VE FEATURED: http://smart-books.tumblr.com/ ----------- It’s Okay To Be Smart is hosted by Joe Hanson, Ph.D. Director: Joe Nicol...
I'm Uncertain How to Feel About 2023
SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ 2023 was a wild year with everything from scorching temperatures to massive wildfires. Even with more renewable energy than ever, 2023’s climate data still seems really bad. So how should we think about climate change today? And what can we do about it? Learn what climate scientists think about 2023’s climate milestones, what the models tell us about the future of Earth’s climate, and how we can tackle climate doomerism. Join our Patreon community: https://www.patreon.com/itsokaytobesmart ----------- High fives to all our Brain Trust P...
How Do We Measure How Vast the Universe Is?
Watch me host @HighSchoolQuizShow! https://www.youtube.com/@HighSchoolQuizShow Join our Patreon community: https://www.patreon.com/itsokaytobesmart ↓↓↓ More info and sources below ↓↓↓ Since the time of the ancient Greeks, scientists have been constructing a cosmic measuring tape to measure the universe from our own backyard all the way to its ever-expanding edge: the cosmic distance ladder. In this video, we climb that ladder and explore how each rung has revealed something new and previously unthinkable about the universe we live in. References: https://sites.google.com/view/cosmic-distance-references/home 0:00 How far away are things? 1:05 Near, far, parallax that star 3:25 Island unive...
Why Does Music Captivate Us?
PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY ↓ More info and sources below ↓ Why does music give us all the feels? Click here to SUBSCRIBE, it's FREE! -- http://bit.ly/iotbs_sub Why does music make us feel happy or sad? Or angry or romantic? How can simple sound waves cause so much emotion? I went from my comfy chair to the streets of Austin to investigate how it might be written into our neuroscience and evolution. Modern neuroscience says our brains may be wired to pick cert...
Why Do More Species Concentrate Near the Equator?
Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Go to http://Raceforretirement.com and see how the action gap affects you. Follow all of our Peru adventures on this playlist: http://bit.ly/SmartPeru ↓ More info and sources below ↓ Special thanks to Rainforest Expeditions for hosting us! Visit http://www.perunature.com/ References: Wilson, E.O. "The Diversity of Life" http://eowilsonfoundation.org/the-diversity-of-life/ Eichhorn, Markus P. "Latitudinal gradients." Natural Systems: The organisation of life: 249-264. "Tropical Ecology" (textbook) by John Kircher (2011) http://press.princeton.edu/titles/9486.html Condami...
Where On Earth Do You Weigh The Least?
You can learn more at https://curiositystream.com/smart SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ You may have heard that a kilogram of feathers weighs the same as a kilogram of steel, but that all depends on where you weigh them. This video is all about the difference between mass and weight, and how weirdly awesome Earth’s gravity really is. REFERENCES: https://en.wikipedia.org/wiki/Mass_versus_weight http://curious.astro.cornell.edu/about-us/42-our-solar-system/the-earth/gravity/94-does-your-weight-change-between-the-poles-and-the-equator-intermediate https://en.wikipedia.org/wiki/Equatorial_bulge http://www.cleonis.nl/physi...
Why Do We All Hate Pigeons?
Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Check out Planet Earth II! https://youtu.be/c8aFcHFu8QM On BBC One in the UK this Sunday and coming to BBC America on 28th January 2017 Don’t be bird-brained. You should SUBSCRIBE! http://bit.ly/iotbs_sub ↓ More info and sources below ↓ Want to wear your love for science? We’ve got merch: http://dftba.com/besmart Find out when you can watch Planet Earth II: http://www.bbcamerica.com/shows/planet-earth http://www.bbc.co.uk/programmes/p02544td S...
What Colour is the Universe?
Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Hint: It's not black Don’t miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ When you stare up at the night sky, you might think that the universe is really black, but that's just because our eyes aren't sensitive enough to see the billions and billions of multicolored stars out there. Ever wonder why certain stars are certain colors? And what color is our sun, really? If we looked at enough stars, could we figure out the ave...
Why Does February Have Just 28 Days?
Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate It's not the size of the month that matters… Don’t miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓ More info and sources below ↓ Why does February have 28 days when all the other months get 30 or 31? The answer is part superstition, part politics, and parts astronomy. (Basically, it's the Romans' fault) Special thanks to Dr. Jen Ebbeler from the University of Texas Classics department for walking me through the history of the Roman calendar REFERENCES AND FURTHER READING: Wikipedia's "Ro...
Sunlight Is Way Older Than You Think. Here’s Why…
PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY ↓ More info and sources below ↓ Thank you for The Great Courses Plus for supporting PBS. To learn more click http://ow.ly/3fCw30qmlF1 We’re on PATREON now! Join the community ►► https://www.patreon.com/itsokaytobesmart SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub If the sun instantly switched off like a light bulb–which can’t happen, by the way–then we wouldn’t know for almost 8 and a half minutes. Light travels at the fastest speed the...
The Stunning Cycles of Carbon and Oxygen In Your Body
Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Click here to dig deeper into Oxygen: http://youtu.be/1PmD2GWB4u4 Click here to dig deeper into Carbon: http://youtu.be/1PmD2GWB4u4?t=47s Subscribe to It's Okay To Be Smart: http://bit.ly/iotbs_sub Follow on Twitter: http://twitter.com/jtotheizzoe Follow on Tumblr: http://www.itsokaytobesmart.com OXYGEN: Electron transport chain (O2 to water): http://en.wikipedia.org/wiki/Electron_transport_chain How Sam Ruben discovered that the oxygen that plants exhale comes fro...
Why People Don't Trust Climate Science
Get the FACTS about climate change: http://youtu.be/ffjIyms1BX4 Don’t miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓ More info and sources below ↓ Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Scientists overwhelmingly agree that our climate is changing, Earth is getting warmer, sea levels are rising, and it's primarily because of humans putting lots of carbon dioxide in the atmosphere. Yet 4 in 10 Americans aren't convinced. Here's what psychologists and sociologists have to say about why some people don't believe in climate science. Last week's v...
There Are Millions of Skeletons Lying Beneath Washington, DC
PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY ↓ More info and sources below ↓ Why do we build monuments? And what are they made of? Click here to SUBSCRIBE -- http://bit.ly/iotbs_sub I took a trip to Washington D.C. to check out some of our nation's most famous monuments. Where do they come from? From the depths of the Earth to the distant reaches of the cosmos, you'll never look at history the same way again. Music "Over the River and Through the River" - Fath...
How Enormous is the Solar System?
PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY ↓ More info and sources below ↓ I took a trip to one of Austin's famous moontowers so I could put the enormity of our solar system into perspective. With the help of a grapefruit, and a lot of walking, you'll get an idea of just how tiny everything is out there!! Do it yourself! Calculate sizes and distances, and then make your own solar system model using this calculator: http://dft.ba/-solarsystem Veritasium "How Far Away Is The Moon?" http://yout...
The History of Money (From Barter To Bitcoin)
PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY ↓ More info and sources below ↓ Thanks to IBM Z for supporting PBS. To learn more about the annual student contest, go to https://ibm.co/2nVdMtD . To learn more about IBM Z go to https://ibm.co/2nVagPR Check out or friends from Two Cents for more great videos about money and finance! https://www.youtube.com/channel/UCL8w_A8p8P1HWI3k6PR5Z6w Money. We all use it. But is it real? I mean, you can...
Evolution FAILS in the Human Body
PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY ↓ More info and sources below ↓ SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub We’re on PATREON now! Join the community ►► https://www.patreon.com/itsokaytobesmart If you were taking an engineering class in school and you turned in the human body for your final exam… you would get like, a C+. Or maybe a B- at best. That’s because the human body is full of design flaws. Except they aren’t really design flaws, because the hum...
How Many Species are in Your Backyard?
PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY ↓ More info and sources below ↓ We’re on PATREON! Join the community ►► https://www.patreon.com/itsokaytobesmart SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub Download iNaturalist to join the It’s Okay to be Smart global survey project and submit your observations! https://www.inaturalist.org/projects/it-s-okay-to-be-smart-global-survey Learn more about iNaturalist and citizen science: https://www.inaturalist.org/ Special thanks to our Brain Trust Patrons: AlecZero Diego Lombeida Dustin Ernesto Silva George Gladding Marcus Tuepker Meg...
How Physics Could Bring About Doomsday
Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate …or how I learned to study physics and start fearing the bomb Don’t miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ Nuclear weapons represent the darker side of E=mc^2. Science has given us the ability to understand what will happen if these weapons are ever used again… and what will happen if they are *never* used again. Atomic test footage from the archives of the Department of Energy, the United States Air Force, the United Sta...
Why Do Clouds Hover Aloft?
There's nothing wrong with having your head in the clouds! Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Subscribe to It's Okay To Be Smart: http://bit.ly/iotbs_sub Big thank you to my favorite cloud scientist Dione Rossiter for help researching this episode! "The Cloudspotter's Guide" by Gavin Pretor-Pinney http://amzn.to/1s3kk2S The International Cloud Atlas: http://bit.ly/1q0kgLy William Rankin - The Man Who Rode the Thunder http://www.youtube.com/watch?v=0cqQzcChFG0 Bacteria that live in the clouds: htt...
%$?# Allergies!
Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate It's the season for sneezin'! Subscribe: http://bit.ly/iotbs_sub Twitter: @okaytobesmart ↓ More info and sources below ↓ Springtime means the arrival of green grass, bright flowers, and buzzing bees. But for many of us, it's also about sneezing, watery red eyes, and a runny nose, thanks to allergies. In this week's video, you'll learn why we get allergies, how our immune system turns against us to attack pollen and pets, and why allergies seem to be on the rise in deve...
Swarm of the Zombie Parasites!
Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Did someone say BRAAAAAINS…? Subscribe: http://bit.ly/iotbs_sub Twitter: @okaytobesmart ↓ More info and sources below ↓ Shows like The Walking Dead are full of hungry, mindless, surprisingly fleet-footed armies of brain-eating zombies. Could they actually exist? Are zombies real? Well, maybe if you're talking about zom-bees! This week I introduce you to some of nature's strangest mind-controlling parasites, who make zombies of the natural world. This one will make your brain tingle. That's just the awesome science, though… not a parasite...
Apollo’s Most Important Discovery (Inside NASA’s Moon Rock Vault!)
PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY ↓ More info and sources below ↓ More moon rocks on Smarter Every Day ►► https://youtu.be/QxZ_iPldGtI And Objectivity ►► https://youtu.be/yvhLBzsDwSQ SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub Fifty years ago, we sent the first astronauts to walk on the moon’s face. But what they brought back is just as important as what got them there. I’m talking about moon rocks, guys. And I got to go visit NASA’s lunar sample vault to le...
How Atom Bombs Can Help Us Detect Art Forgery
Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Want more cool art videos? Check out The Art Assignment http://bit.ly/ArtAssnmt Don’t miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ It’s been estimated that 1 in 10 works of fine art are forged or misattributed. The truth is, no one really knows how much fake art is out there, because many art counterfeiters are so skilled that their paintings are almost indistinguishable from the real works. But even counterfeiters can’t beat physics! From atom...
Why Did We Blow On Nintendo Consoles?
Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate ↓ More info and sources below ↓ Check out http://youarenotsosmart.com/ for more on cognitive biases Books by David McRaney: http://amzn.to/1pQqmQh and http://amzn.to/1qrGRpM Did blowing on NES cartridges actually do anything? http://mentalfloss.com/article/12589/did-blowing-nintendo-cartridges-really-help http://gaming.stackexchange.com/questions/15044/why-did-you-have-to-blow-into-an-nes-cartridge-to-make-it-work http://www.digitpress.com/forum/showthread.php?117240-DP-MYTHBUSTERS-Blowing-in-NES-Cartridges Mario speedrun video via akyeren: https://www.youtube.com/watch?v=Boq3ghiTKHA The Vegetable Lamb of Tartary: http://www.wired.com/2014/04/fantastically-wrong-vegetable-lamb-tartary/ Mice from dirty l...
Is Santa Real? (A Scientific Perspective)
...and other Christmas mysteries answered with science! Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Subscribe to It's Okay To Be Smart: http://bit.ly/iotbs_sub Happy Holidays! Ever wonder how Santa could possibly manage to deliver all those presents in a single night? Or what gives red-nosed reindeer the ability to fly? And why do your Christmas lights get tangled in knots no matter how carefully you put the away?! Here's some Christmas-themed science, as our gift to you. See you in 2015! SOURCES: Why Christmas lights tan...
Could We Recreate Ourselves?
Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Just be yourself! Or be your other self. Whichever. Subscribe: http://bit.ly/iotbs_sub Twitter: @okaytobesmart ↓ More info and sources below ↓ Is the science of Orphan Black realistic? Could we clone humans, or engineer them to have customized traits? We take a look at today's genetic engineering technologies to find out if designer babies and human cloning is, or should be, a reality BOOKS! For more on the modern science of cloning and genetic modification, read the book "Frankenstein's Cat" by...
You Are Chiefly Microbe!
PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY ↓ More info and sources below ↓ Your body is essentially a walking home for trillions of bacteria Click here to SUBSCRIBE, it's FREE! -- http://bit.ly/iotbs_sub Ever not felt completely like yourself? There's a good reason for that. Because a large part of you . . . isn't you. Our bodies are home to ten times as many microbes as human cells. We are walking ecosystems, each of us home to thousands of different species on and inside of us. Meet your...
The Secret To Life…
Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate We're cookin' in the primordial kitchen! Don’t miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ If the human body could be distilled down into one molecule, what would our chemical formula be? And WHY is it that way? Is that one scene from Full Metal Alchemist even a little bit true? There's a whole lot of elements on the periodic table, but life depends on relatively few of them in order to build all the things...
Do You Really Have Two Brains?
Viewers like you help make PBS (Thank you ) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate You're gonna lobe this video Don't miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ Are you a left-brained person or a right-brained person? Spoiler: You're neither. Each of us uses both sides of our brain for most of what we do. But still, there are a number of brain functions that do show lateralization, where they are localized to one side or another. Why is this? And how does it influence our definition of consciousness...
Bizarre Involuntary Behaviors Explained!
Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Why we yawn, why we hiccup, twitchy eyes (and more)! Don’t miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓ More info and sources below ↓ Follow on Twitter: http://twitter.com/jtotheizzoe Follow on Tumblr: http://www.itsokaytobesmart.com Follow on Instagram: http://instagram.com/jtotheizzoe Our bodies do a lot of weird things, and many of them are completely involuntary. Why do we often jerk our bodies awake right before falling asleep? Why do we yawn? Why do we hiccup...
How a Planet-Sized Telescope Took the First Picture of a Black Hole | STELLAR
PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY ↓ More info and sources below ↓ Thank you to Draper and its Hack the Moon initiative for supporting PBS Digital Studios | Learn more at https://wehackthemoon.com It took about a century for black holes to go from impossible, to theoretical, to real. And it was just this year, in 2019, when we finally saw the first picture of a black hole! But how to you take a photo of something so massively dense that not even light can escape its gravitational pull...
The Science and Grace of Auroras
PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY ↓ More info and sources below ↓ The science behind Earth's nocturnal light showClick here to SUBSCRIBE, it's FREE! -- http://bit.ly/iotbs_sub Space might seem like an empty place, but the area surrounding Earth is constantly being bombarded by waves of charged particles released by the Sun: The solar wind. Luckily, thanks to Earth's swirling, molten core (and the magnetic field it provides), we are protected from this planet-sterilizing onslaught like an invisible force field All that science has a be...
The Dimensions of the Universe
PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY ↓ More info and sources below ↓ Do you ever freak out about the scale of time and space? Me too! Don’t miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub From the very large to the very small, the universe is an amazing place. Here's my favorite ways to explore its scale. Explore them yourself: Scale of the Universe 2 - http://htwins.net/scale2/ Powers of Ten - Charles and Ray Eames http://www.youtube.com/watch?v=0fKBhvDjuy0 Here is To...
What Makes Luck?
Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Do you feel lucky? SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓ More info and sources below ↓ Is luck real? It might feel like a mystical force tugging us toward good or bad fortune, but it turns out luck is really where probability runs into the human mind. That’s right, there’s a scientific side to luck, and if you study a few principles of math and psychology, you might even be able to create your own good fortune. ----------- LEARN MORE: “The Luck...
The Strange Evolutionary Story of the Thylacine
Special thanks to Vanessa from BrainCraft for help with this video! Check out her channel: https://www.youtube.com/braincraft ↓↓↓ More info and sources below ↓↓↓ Until the early 20th century, Tasmania was home to a very weird wolf-like creature. Except that it wasn’t a wolf. Even though it looked like a wolf. How did that happen? Here’s the science of convergent evolution! Want to see more of my interview with Rob? Click here: https://www.youtube.com/watch?v=hsek8JxUS7M Special thanks to: Rob Voss - American Museum of Natural History, New York City Vanessa Hill from BrainCraft...
How Did We Work Out What Light Is?
Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Try CuriosityStream today: http://curiositystream.com/smart Here's a bright idea: Subscribe ►► http://bit.ly/iotbs_sub ↓ More info and sources below ↓ Beyond what we can touch, taste, smell, and hear, we experience the universe through light. But how did we come to discover light, and how did we learn light’s true nature, as the fastest thing in the universe, an electromagnetic spectrum, a wave and particle capable of the most amazing things? Here is the history of light, according to...
