Top 10 Mind-Blowers: Nudity

Naked Flesh is a Diagnostic Tool
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For all our layered garments, humans are still creatures of flesh -- and our flesh tells a tale. In fact, you can think of our naked skin as a communication array of sorts.

According to neurobiologist Mark Changizi, color vision may have evolved in order for us to detect emotive skin color changes, such as blushing. Full-body skin color changes also occur due to hundreds of different diseases, but we often don't notice because there's no baseline skin color to compare them to.

In a 2010 paper published in Medical Hypothesis, Changizi argued that doctors might better notice these changes if hospital gowns and bed sheets were colored to match a patient's normal skin color. That way, the contrast would be instantly noticeable in the event of cyanosis and other health-related skin color changes. Listen to the skin...

About the Author: Robert Lamb spent his childhood reading books and staring into the woods — first in Newfoundland, Canada and then in rural Tennessee. There was also a long stretch in which he was terrified of alien abduction. He earned a degree in creative writing. He taught high school and then attended journalism school. He wrote for the smallest of small-town newspapers before finally becoming a full-time science writer and podcaster. He’s currently a senior writer at HowStuffWorks and has co-hosted the science podcast Stuff to Blow Your Mind since its inception in 2010. In his spare time, he enjoys traveling with his wife Bonnie, discussing dinosaurs with his son Bastian and crafting the occasional work of fiction.