The Kids Should See This

The Kids Should See This

  • New Smart Channel

Summertime Science: Sun, Swim, and Sweat

18h ago

Why do we sweat? Why do our fingers wrinkle in water? Why do we get sunburns? Joe Hanson explains it all in this summer science episode of It’s Okay to Be Smart. Bonus: find out what those SPF numbers mean on your sunscreen.


A summertime look at why we sweat, why we burn, and why our fingers wrinkle in the pool. Subscribe to It’s Okay To Be Smart: ↓ More info and sources below ↓ Follow on Twitter: Follow on Tumblr: References/further reading: Eccrine and apocrine sweat glands: “Are Wet-Induced Wrinkled Fingers Primate Rain Treads?” M. Changizi et al, Brain Behav Evol 2011 (Not everyone agrees with the rain tread hypothesis, though: Sunburn/UV light triggers immune response: UV-A rays and Unilateral Dermoheliosis (the truck driver’s face) DNA damage and repair and their role in carcinogenesis ----------------- Have an idea for an episode or an amazing science question you want answered? Leave a comment below! Follow me on Twitter: @jtotheizzoe Email me: itsokaytobesmart AT gmail DOT com Facebook: Google+ For more awesome science, check out: Joe Hanson - Host and writer Joe Nicolosi - Director Amanda Fox - Producer, Spotzen Inc. Kate Eads - Associate Producer Editing/Motion Graphics - Andrew Matthews Gaffer - John Knudsen Theme music: “Ouroboros” by Kevin MacLeod Artwork/photos via Shutterstock Produced by PBS Digital Studios: ----------------- Last week’s video: The Beauty of Solar Magnetism More videos: Why Did We Blow on NES Games? The Science of BBQ The Science of Game of Thrones - The Far Future of the Universe - There Was No First Human - How The Elements Got Their Names -