Sunburn, Sweat and the Summer Science Explained!

What's the Eldest Living Creature?

Big thank you to Rachel for lending her voice and photos to this episode! 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 "The Oldest Living Things In The World" by Rachel Sussman: Amazon: http://amzn.to/1uZ6wJp Public Library: http://bit.ly/1s2gCnb Species featured in this video: Bristlecone pine: http://bit.ly/1o3zW4p Baobab: http://bit.ly/1qJo6ul Pando: http://bit.ly/1tLlRLU Map lichens: http://bit.ly/WVgoFh Yucca: http://bit.ly/1uZ71my Creosote: http://bit.ly/1xUZrpj Llareta: http://bit.ly/1ANGYPC Black coral: http://bit.ly/1zLWn1s Barrel sponge: http://bit.ly/1opvDjb Posidonia sea grass: http://bit.ly/UVoN9u Pond cypress: http://bit.ly/1okVPY6 "Old Tjikko" spruce: http://bit.ly/1s30eq7 Stromatolites: http://bit.ly/1pyymXs Siberian Actinobacteria: http://bit.ly/1xUZ5yR Joe Hanson - Host and writer Joe Nicolosi - Director Amanda Fox - Producer, Spotzen IncKate Eads - Associate Producer Editing/Motion Graphics - Andrew Matthews Gaffer - John Knudsen Theme music: "Ouroboros" by Kevin MacLeod Stock images via Shutterstock Produced for PBS Digital Studios Unless otherwise indicated, all photos are © Rachel Sussman, used with permission ----------- Join us on Patreon! https://patreon.com/itsokaytobesmart Twitter http://www.twitter.com/DrJoeHanson http://www.twitter.com/okaytobesmart Instagram http://www.instagram.com/DrJoeHanson http://www.instagram.com/okaytobesmart Merch https://store.dftba.com/collections/its-okay-to-be-smart Facebook https://www.facebook.com/itsokaytobesmartpbs/ Learn more about your ad choices. Visit megaphone.fm/adchoices [https://megaphone.fm/adchoices]

The Science of Marathon Performance

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 ran one… FOR SCIENCE! Don’t miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub So maybe we can't outrun cheetahs or antelope, but humans are uniquely adapted for long distance running. What does science have to say about marathon running? To find out, (and because I was feeling a little crazy) I decided to run one! Here's what I discovered about the science of long distance running Endurance running adaptations: http://upload.wikimedia.org/wikipedia/commons/7/7d/Human_Running_Adaptations.png For more on the science and evolution of distance running, from training plans to cellular physiology, check out Tim Noakes' "The Lore of Running" http://amzn.to/1eKYir9 and Christopher McDougall's "Born to Run" http://amzn.to/NnF7wb Joe Hanson - Host and writer Joe Nicolosi - Director Amanda Fox - Producer, Spotzen IncKate Eads - Associate Producer Katie Graham - Director of Photography Andrew Matthews - Editor and motion graphics John Knudsen - Gaffer Music: "Ouroboros" by Kevin MacLeod Other music via APM Stock images via Shutterstock Produced for PBS Digital Studios ----------- Join us on Patreon! https://patreon.com/itsokaytobesmart Twitter http://www.twitter.com/DrJoeHanson http://www.twitter.com/okaytobesmart Instagram http://www.instagram.com/DrJoeHanson http://www.instagram.com/okaytobesmart Merch https://store.dftba.com/collections/its-okay-to-be-smart Facebook https://www.facebook.com/itsokaytobesmartpbs/ Learn more about your ad choices. Visit megaphone.fm/adchoices [https://megaphone.fm/adchoices]

Sunburn, Sweat and the Summer Science Explained!

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 ↓ A summertime look at why we sweat, why we burn, and why our fingers wrinkle in the pool. References/further reading: Eccrine and apocrine sweat glands: https://www.inkling.com/read/dermatology-bolognia-jorizzo-schaffer-3rd/chapter-35/eccrine-apocrine-and-apoeccrine "Are Wet-Induced Wrinkled Fingers Primate Rain Treads?" M. Changizi et al, Brain Behav Evol 2011 http://www.karger.com/Article/FullText/328223 (Not everyone agrees with the rain tread hypothesis, though: http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0084949) Sunburn/UV light triggers immune response: http://www.nature.com/nm/journal/v18/n8/full/nm.2861.html UV-A rays and Unilateral Dermoheliosis (the truck driver's face) http://www.nejm.org/doi/full/10.1056/NEJMicm1104059 DNA damage and repair and their role in carcinogenesis http://www.ncbi.nlm.nih.gov/books/NBK21554/ Joe Hanson - Host and writer Joe Nicolosi - Director Amanda Fox - Producer, Spotzen IncKate Eads - Associate Producer Editing/Motion Graphics - Andrew Matthews Gaffer - John Knudsen Theme music: "Ouroboros" by Kevin MacLeod Stock images via Shutterstock Produced for PBS Digital Studios ----------- Join us on Patreon! https://patreon.com/itsokaytobesmart Twitter http://www.twitter.com/DrJoeHanson http://www.twitter.com/okaytobesmart Instagram http://www.instagram.com/DrJoeHanson http://www.instagram.com/okaytobesmart Merch https://store.dftba.com/collections/its-okay-to-be-smart Facebook https://www.facebook.com/itsokaytobesmartpbs/ Learn more about your ad choices. Visit megaphone.fm/adchoices [https://megaphone.fm/adchoices]

There Was No Inaugural Human

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 ↓ If you traced your family tree back 185 million generations through evolution, you wouldn't be looking at a human, a primate, or even a mammal. You'd be looking at a fish. So where along that line does the first human show up? The answer may surprise you! Inspired by Richard Dawkins' "The Magic of Reality" http://amzn.to/1eFPE0v Also check out Richard Dawkins' "The Ancestor's Tale" http://amzn.to/1fbf17e Images of prehistoric species used in this episode: Tiktaalik, Procunsul, Plesiadapsis, Juramaia, Hylonomus - by Nobu Tamura (http://spinops.blogspot.com/) Homo erectus (by Tim Evanson) http://bit.ly/1uwI5zu Joe Hanson - Host and writer Joe Nicolosi - Director Amanda Fox - Producer, Spotzen IncKate Eads - Associate Producer Katie Graham - Director of Photography Andrew Matthews - Editor and motion graphics John Knudsen - Gaffer Music: "Ouroboros" by Kevin MacLeod Produced for PBS Digital Studios ----------- Join us on Patreon! https://patreon.com/itsokaytobesmart Twitter http://www.twitter.com/DrJoeHanson http://www.twitter.com/okaytobesmart Instagram http://www.instagram.com/DrJoeHanson http://www.instagram.com/okaytobesmart Merch https://store.dftba.com/collections/its-okay-to-be-smart Facebook https://www.facebook.com/itsokaytobesmartpbs/ Learn more about your ad choices. Visit megaphone.fm/adchoices [https://megaphone.fm/adchoices]

How Do Tesla Coils Work? Musical Tesla Coils in SLOW MOTION! (Guest: @physicsgirl)

Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Head to Physics Girl for electromagnetic explosions! https://youtu.be/AXOa66-k9MA Musical tesla coils are awesome. I went to visit Arc Attack, the legendary musical tesla coil band, to find out how they work (and to stand in between them!) I brought my friend Physics Girl along too Step inside the Tesla coils in this 360 video: https://youtu.be/2SNcbNlbyVo Special thanks to: ArcAttack http://arcattack.com/ ----------------- It’s Okay To Be Smart is written and hosted by Joe Hanson, Ph.D. Follow me on Twitter: @DrJoeHanson Produced by PBS Digital Studios: http://www.youtube.com/user/pbsdigitalstudios Music via APM Stock images from SciencePhoto http://www.sciencephoto.com/ and Shutterstock http://www.shutterstock.com Stock footage from Videoblocks (unless otherwise noted) http://www.videoblocks.com Learn more about your ad choices. Visit megaphone.fm/adchoices [https://megaphone.fm/adchoices]