Why Is Blue So Rare In Nature?
Why Is Blue So Rare In Nature?
Why Is Blue So Rare In Nature?

Why Is Blue So Rare In Nature? - It's Okay To Be Smart

It's Okay To Be Smart
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Joe Hanson, Ph.D. is a curious group of atoms in a curious universe, and he's here to tell you how it all works. Subscribe for new science videos every week! Have ideas or questions? Find me on Twitter: @okaytobesmart or @DrJoeHanson

Video Related Why Is Blue So Rare In Nature? - It's Okay To Be Smart

Why Don't Country Flags Use The Color Purple?

For centuries purple dye was worth more than gold. The dye used to produce purple fabric came from a sea snail that only lived off the shores of modern day Lebanon. Because it was so rare, purple became associated with royalty. This is the reason you don't see purple on country flags. It was just too expensive to produce. Sometimes the simplest questions have extraordinary answers. For more interesting animations like this one, please subscribe to After Skool. Sources: http://www.tekhelet.com/pdf/steiglitz-minoan.pdf https://www.ancient.eu/Tyrian_Purple/ http://onlygold.com/Info/Value-Your-Weight-In-Gold.asp https://www.livescience.com/33324-purple-royal-color.html https://www.quora.com/Which-country-flags-have-the-color-purple-in-them

20 MILLION Year-Old Spider!! Unweaving Spider Silk 

Check it out: BrainCraft visits another MacArthur Genius! https://youtu.be/ewPeAFQWg3s Don't miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ Living things have engineered some pretty awesome materials, but I'm not sure anything measures up to spider silk. It's as strong, as stretchy, and as resilient than even humans' most advanced creations like Kevlar and steel. So how do these awesome arachnids weave such an incredible substance using nothing but their rear ends? And… what IS this stuff? I went to meet Dr. Cheryl Hayashi, one of the world's experts in spider silk, to find out. Special thanks...

Why Are We The Only Humans Left?

Try 23andMe at: http://www.23andme.com/okay Part 2 of our special series on Human Ancestry. Watch it all: http://bit.ly/OKTBSHuman ↓↓↓More info and sources below ↓↓↓ In part 2 of our special series on human ancestry, we ask why we are the only surviving branch on the human evolutionary tree. Just 50,000-100,000 years ago, Earth was home to three or four separate human species, including our most famous cousins: the Neanderthals. New research has shown that Neanderthals were not the brutish, unintelligent cavemen that cartoons make them out to be. They were creative, smart, social, and perhaps even had complex language. So why...

How An Igloo Keeps You Warm

Building a perfect igloo takes cool science! Don’t miss the next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓ More info and sources below ↓ If you ever find yourself stranded in the snowy Arctic (or bored in Minecraft), you’re gonna need to know how to build an igloo. But how can building a house made of ice keep you warm? The science behind building an igloo is the same reason that otters and reindeer don't freeze to death! LEARN MORE: There really ARE 50 Eskimo words for snow: http://wapo.st/2iwThf3 PBS Idea Channel - An Infinite Number of Words for Snow https://www.youtube.com/watch?v=CX6i2M4AoZw Why there’s no such...

Why Do Vicious Killers Make Good Pets?

Cats are considered an invasive species and kill literally billions of birds and small mammals each year. But they're so cute and cuddly! Could there be some sort of connection between their predatory nature and their lovableness? ►Support us on Patreon: https://www.patreon.com/thegoodstuff ►Our Sci-Fi Show: http://kck.st/2f8n2mP ►Subscribe: http://youtube.com/thegoodstuff ►Follow us on Twitter: http://www.twitter.com/goodstuffshow ►Like us on facebook: http://www.facebook.com/thegoodstuffshow Image Credits https://commons.wikimedia.org/wiki/File:Canis_lupus_pack_surrounding_Bison.jpg By Doug Smith [Public domain], via Wikimedia Commons Canis_lupus_pack_surrounding_Bison Funny Cat Fails Compilation REACTION!!!.mp4 https://www.youtube.com/watch?v=0nPNvJzC4JY 1-month-old_kitten_35.jpg https://commons.wikimedia.org/wiki/File:1-month-old_kitten_35.jpg By 0x010C (Own work) [CC BY-SA 4.0 (http://creativecommons.org/licenses/by-sa/4.0)], via Wikimedia Commons 1-month-old_kitten_36 https://commons.wikimedia.org/wiki/File:1-month-old_kitten_36.jpg By 0x010C (Own work) [CC BY-SA 4.0 (http://creativecommons.org/licenses/by-sa/4.0)], via Wikimedia Commons Golden_tabby_and_white_kitten_n02 https://en.wikipedia.org/wiki/File:Golden_tabby_and_white_kitten_n02.jpg Pet owners image C-rGFGpXUAAdfJj Two_orange_tabby_cats_greeting_by_rubbing https://commons.wikimedia.org/wiki/File:Two_orange_tabby_cats_greeting_by_rubbing-Hisashi-01.jpg By Hisashi from Japan (D02_0005 Uploaded by Caspian blue) [CC BY-SA 2.0 (http://creativecommons.org/licenses/by-sa/2.0)],...

Why Europeans And Asians Evolved So Differently

Please Subscribe! http://testu.be/1FjtHn5 Early humans migrated all over the world to get us where we are today. The environments our ancestors inhabited made us all very different! + + + + + + + + TestTube Plus is built for enthusiastic science fans seeking out comprehensive conversations on the geeky topics they love. Host Trace Dominguez digs beyond the usual scope to deliver details, developments and opinions on advanced topics like AI, string theory and Mars exploration. TestTube Plus is also offered as an audio podcast on iTunes. + + + + + + + + Trace Dominguez on Twitter...

Why Alien Life Would be our Doom - The Great Filter

The first 688 people to use this link will get 20% off their annual membership: http://brilliant.org/nutshell Thanks a lot to Brilliant for supporting this channel. Finding alien life on a distant planet would be amazing news - or would it? If we are not the only intelligent life in the universe, this probably means our days are numbered and doom is certain. Kurzgesagt Newsletter: http://eepurl.com/cRUQxz Support us on Patreon so we can make more videos (and get cool stuff in return): https://www.patreon.com/Kurzgesagt?ty=h Kurzgesagt merch: http://bit.ly/1P1hQIH The MUSIC of the video: Soundcloud: http://bit.ly/2rVtfvh Bandcamp: http://bit.ly/2DTeVc9 Facebook: http://bit.ly/2qW6bY4 THANKS A LOT TO OUR LOVELY PATRONS FOR SUPPORTING US: Jacob Palmer,...

Your Salad Is Trying To Kill You

The dose makes the poison… Subscribe: http://bit.ly/iotbs_sub Twitter: @jtotheizzoe @okaytobesmart ↓ More info and sources below ↓ CORRECTION: @2:14 we showed the wrong Paul Ehrlich (guy on the left). Instead of Paul Ehrlich the German doctor, we meant to show Paul Ehrlich the biologist: https://en.wikipedia.org/wiki/Paul_R._Ehrlich Plants are the most important source of nutrients for pretty much all of Earth's animals, and many of the planet's bacteria and fungi too. Humans like them so much that we line them up in salad bars so we can feast upon their crunchy cronch by the plate full. But plants don't always want to be eaten, ya...

The Invention Of Blue

Curiosity Box: https://www.curiositybox.com/ Written, Produced, Edited and Hosted by Kevin Lieber Instagram: http://instagram.com/kevlieber Twitter: https://twitter.com/kevleeb Website: http://kevinlieber.com Contributing Researcher & Editor Matthew Tabor, Koala Fight Media http://koala.fm/ VFX by Eric Langlay https://www.youtube.com/c/ericlanglay Select Music by Jake Chudnow https://www.youtube.com/user/jakechudnow Special Thanks Paula Lieber https://twitter.com/pixichuu Vsauce2 Links Twitter: http://www.twitter.com/VsauceTwo Facebook: https://www.facebook.com/VsauceTwo Website: http://www.Vsauce.com **** LINKS AND SOURCES **** BOOKS The Brilliant History of Color in Art by Victoria Finlay https://www.amazon.com/Brilliant-History-Color-Art/dp/1606064290/ Blue: The History Of A Color by Michel Pastoureau https://www.amazon.com/Blue-History-Color-Michel-Pastoureau/dp/0691090505/ Secret Language Of Color by Joann Eckstut and Arielle Eckstut https://www.amazon.com/Secret-Language-Color-Science-History/dp/1579129498/ SPECIAL THANKS Virginia Postrel https://vpostrel.com/ https://www.amazon.com/Substance-Style-Aesthetic-Remaking-Consciousness/dp/0060933852/ Victoria Finlay https://victoriafinlay.com/ Joshua J. Mark http://www.ancient.eu/user/JPryst/ Kidmograph http://www.kidmograph.com/ https://www.instagram.com/kidmograph/ Outro Song “I Came Back For You” by Trevor Something https://trevorsomething.bandcamp.com/album/soulless-computer-boy-and-the-eternal-render ARTICLES Pigments Through The Ages https://goo.gl/ytfGV3 https://goo.gl/D6nwMs Color In Art https://goo.gl/4Bu7pD Harvard Color Vault https://goo.gl/Q86ixm https://goo.gl/Y43xCb Little Snow White https://goo.gl/Lsm8Xt A Story Of Blue https://goo.gl/4GsVFB The Material History of the Color...

Why Do We Laugh?

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! The Science of When We Laugh and Why" by Scott Weems http://amzn.to/1etLLyv Have an idea for an episode or an amazing science question you want answered? Leave a comment or...

How Atom Bombs Can Uncover Forged Art

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 atomic bomb remnants to ancient atoms, here’s some of the amazing ways that science can detect fake art. SOURCES: “The Scientist and...

Are We All Related?

This is part 3 of our special series on Human Ancestry! Watch the entire series here ►► http://bit.ly/OKTBSHuman ↓↓↓More info and sources below ↓↓↓ In part 3 of our special series on human ancestry, we investigate how closely related we all really are. Basic math tells us that all humans share ancestors. But you’ll be amazed at how recently those shared ancestors lived. Thanks to genetic data in the 21st century, we’re even discovering that we really are all descended from one mother. ----------- REFERENCES: Chang, Joseph T. "Recent common ancestors of all present-day individuals." Advances in Applied Probability 31.04 (1999): 1002-1026. Jorde, Lynn...

What Is Fire?

We've got T-SHIRTS! http://dftba.com/besmart Don’t miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓ More info and sources below ↓ Why does fire burn? What's the chemistry and physics of a flame? This week, learn about the beautiful science happening inside a flame! Michael Faraday's Christmas lectures on candle chemistry: http://blogs.scientificamerican.com/cocktail-party-physics/christmas-with-faraday-the-chemical-history-of-a-candle/ http://www.bartleby.com/30/7.html Flames in space: http://science.nasa.gov/science-news/science-at-nasa/2013/18jun_strangeflames/ Richard Feynman talking about fire: http://www.itsokaytobesmart.com/post/27299255757/fun-with-feynman-fire-you-cant-help-but-smile Have an idea for an episode or an amazing science question you want answered? Leave a comment or check us out at the links below! Follow on Twitter: http://twitter.com/okaytobesmart http://twitter.com/jtotheizzoe Follow on Tumblr: http://www.itsokaytobesmart.com Follow on Instagram: http://instagram.com/jtotheizzoe ----------------- It's Okay To Be Smart is written and hosted...

What If You Never Forgot Anything?

To learn more about Brilliant, go to https://brilliant.org/BeSmart/ and sign up for free. First 200 people will get 20% off the annual Premium subscription. ↓↓↓ More info and sources below ↓↓↓ How does memory work? And how does… un-memory work? Our brain does a lot of remembering and forgetting every day, so you should probably make room for som info on how it works. You’ll also get to meet some people who can’t make memories, and also never forget anything. References: http://bit.ly/2rdFW0O ----------- FOLLOW US: Twitter:@DrJoeHanson @okaytobesmart Instagram: @DrJoeHanson Merch: https://store.dftba.com/collections/its-okay-to-be-smart Facebook: http://www.facebook.com/itsokaytobesmart SEND US STUFF: It’s Okay To Be Smart PO Box 303356 Austin, TX 78703...

Why Don't Ants Get Stuck In Traffic?

Go to http://Raceforretirement.com and see how the action gap affects you. Tweet this video ⇒ http://bit.ly/OKTBStraf Share on FB ⇒ http://bit.ly/OKTBStrafFB ↓ More info and sources below ↓ CGP Grey "The Simple Solution to Traffic" https://youtu.be/iHzzSao6ypE ASAPscience "How Not To Get Stuck In Traffic" https://youtu.be/APkpiO0QQ_k Book recommendation! "Traffic: Why We Drive the Way We Do" by Tom Vanderbilt http://amzn.to/2durlGP References: INRIX 2015 traffic stats: http://inrix.com/scorecard/key-findings-us/ Couzin, Iain D., and Nigel R. Franks. "Self-organized lane formation and optimized traffic flow in army ants." Proceedings of the Royal Society of London B: Biological Sciences 270.1511 (2003): 139-146. Fourcassié, Vincent, Audrey Dussutour, and Jean-Louis Deneubourg. "Ant...

What is Déjà Vu?!

I feel like I've seen this video before… Subscribe: http://bit.ly/iotbs_sub Twitter: @okaytobesmart ↓ More info and sources below ↓ Follow on Twitter: http://twitter.com/okaytobesmart http://twitter.com/jtotheizzoe Follow on Tumblr: http://www.itsokaytobesmart.com Follow on Instagram: http://instagram.com/jtotheizzoe Most of us have felt it before, that strange sensation that you've been somewhere or seen something before, as if you already remembered what's happening. Are you psychic? Nope, that's just déjà vu. Why does déjà vu happen? Well, scientists aren't completely sure, but they've got a few good theories about it. Great déjà vu explainer from Jordan Gaines Lewis: http://www.gainesonbrains.com/2012/02/seeing-into-future-neuroscience-of-deja.html Some theories of why déjà vu happens: http://theconversation.com/explainer-what-is-deja-vu-and-why-does-it-happen-11355 And now...

Did Dinosaurs Really Go Extinct?

Welcome to… Jurassic Pluck Subscribe: http://bit.ly/iotbs_sub Twitter: @jtotheizzoe @okaytobesmart ↓ More info and sources below ↓ Most people are taught that dinosaurs went extinct 66 million years ago when a giant meteor crashed into the Yucatan peninsula. I'm here to tell you that's wrong. Dinosaurs are alive and well today, and you don't have to go to Jurassic World to see them (although hanging out with Chris Pratt would be cool) We have living dinosaurs all around us. We just call them "birds". Yes. Birds are dinosaurs. The tetrapod playlist: https://www.youtube.com/playlist?list=PLsmqeqKj7M-oVnyE5_1x-dUFYHxLLQmRD Special thanks to Scott Hartman (http://www.skeletaldrawing.com/) for the great Deinonychus and Archaeopteryx illustrations More info/sources: Great...

The Cheerios Effect

Who knew there was so much science in a bowl of cereal? Don’t miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ Ever notice how cereal clumps up in your bowl, or how cereal sticks to the edges of the bowl? Bubbles in beverages do the same thing.You've probably seen this surface tension and buoyancy at work, but did you know there's some mind-blowing science behind it? What we learn in our cereal bowl even connects to the lives of tiny insects that walk on water. SOURCES/EXTRAS: Vella, Dominic, and L. Mahadevan. "The “cheerios effect”." American...

Why Are There As Many Males As Females?

Evolution doesn’t pick a side! Don’t miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ In almost every animal species on Earth, equal numbers of males and females are conceived. Why is that? Especially in populations like lions or elephant seals, where most males don’t get to mate? That’s survival of the laziest, not survival of the fittest. It turns out that in most cases, an equal balance of the sexes is the evolutionary stable strategy. From Charles Darwin to Ronald Fisher to W.D. Hamilton to Richard Dawkins, the question of why there’s as many males...

Why Do We Cook?

Your brain is hungry. Here's how to feed it SUBSCRIBE, it's FREE! http://bit.ly/iotbs_sub ↓ More below ↓ Ever wonder why we cook our food? We do it because it tastes good, of course, and because our customs and traditions are built around it. But we also cook our food for some basic biological reasons, because of evolution. Some scientists think that figuring out how to cook actually MADE us human! If conversation gets a little dry around your holiday table, now you'll have some awesome science to share with everyone! Richard Wrangham - "Catching Fire: How Cooking Made Us Human" http://amzn.to/1cg5flN "The Raw...

DNA Doesn’t Look Like What You Think!

I used #badDNA once in this video. Can you find it? Don’t miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ If you see #badDna, be sure to show me on Twitter! @DrJoeHanson @okaytobesmart Biology textbooks are full of drawings of DNA, but none of those show what DNA actually looks like. Sure, they’re good models for understanding how DNA works, but inside of real cells, it’s a whole lot more interesting. Learn why we can’t look directly at DNA, and find out how DNA is actually packed inside cells. ----------- READ MORE: Best electron microscope image of DNA:...

ЩΉӨ BЦIᄂƬ ƬΉΣ PYЯΛMIDƧ

Try 23andMe: http://www.23andme.com/okay Enjoy this video? SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓↓↓More info and sources below ↓↓↓ Who built the pyramids? The colossal geometric monuments found at Giza and elsewhere in Egypt are some of Earth’s most impressive constructions. Pyramids are truly wonders of the ancient and modern world. But when the pyramids were built, the ancient Egyptians hadn’t invented the wheel, developed bronze tools, or discovered pi. How were they able to stack two million stone blocks, each weighing more than two tons, into precise geometric alignments that would survive more than 4,000 years and capture the imaginations of...

Why Do We Itch?

Scratch that itch and SUBSCRIBE! ►► http://bit.ly/iotbs_sub Check out our friends from Above the Noise: http://bit.ly/2KMBMG3 ↓↓↓ More info and sources below ↓↓↓ It’s one of the most annoying sensations our bodies can feel, but does anything feel better than when you scratch an itch? Ok, maybe *some* things. But itching and scratching are up there. How does this weird sensation work? And what is itching for? References: http://bit.ly/2IiIqWn ----------- FOLLOW US: Twitter: @DrJoeHanson @okaytobesmart Instagram: @DrJoeHanson Merch: https://store.dftba.com/collections/its-okay-to-be-smart Facebook: http://www.facebook.com/itsokaytobesmart SEND US STUFF: It’s Okay To Be Smart PO Box 303356 Austin, TX 78703 USA BOOKS WE’VE FEATURED: http://smart-books.tumblr.com/ ----------- It’s Okay To Be Smart is hosted by Joe...

Why Do You Love Your Family?

You can learn more about your personal DNA story by going to https://23andMe.com/okay Don't miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ Why do we love people we're related to? Compared to strangers, why do we feel such a deep sense of connection with our family members? Sure, they're nice to us, we take care of each other, and we often live with them, but there has to be a deeper biological reason. That reason, unsurprisingly is evolution. In this video, I explain why taking care of our family, or even dying for them, makes...

What’s The Hottest Hot and Coldest Cold?

Want more cool physics? Check out Physics Girl! http://youtube.com/physicsgirl Be cool and SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ The hottest and coldest temperatures in our universe are rarely witnessed, but in these rare spots, our understanding of physics is challenged. Weird things happen at extreme hot and absolute cold. References: Clark, J. B., Lecocq, F., Simmonds, R. W., Aumentado, J., & Teufel, J. D. (2017). Sideband cooling beyond the quantum backaction limit with squeezed light. Nature, 541(7636), 191. An Introduction to Modern Astrophysics, 2nd ed, Bradley W Carroll and Dale A Ostlie, 2006. An Introduction to Thermal Physics, Daniel Schroeder, 1999. ----------- FOLLOW US: Twitter:...