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Summertime Science: Sunburn, Sweat, and Wrinkly Fingers





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Published on Jul 28, 2014

A summertime look at why we sweat, why we burn, and why our fingers wrinkle in the pool.
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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!

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Email me: itsokaytobesmart AT gmail DOT com
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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

Stock images via Shutterstock

Produced by PBS Digital Studios:


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