Showing posts with label new scientist. Show all posts
Showing posts with label new scientist. Show all posts

Friday, February 24, 2012

(2) The value of pubic hair to human survial


Jack Dikian
February 2012

In the series looking at the New Scientist eccentricities of humans and what impact these have in overall survival value and evolutionary rationale. Here is another – Pubic hair.

While primates have finer hair around their genitals than on the rest of their body, adult humans sport an impressively thick bush of pubic hair.

Robin Weiss, Professor of Viral Oncology at University College London, in Journal of Biology, Vol 8 observes that pubic hair became thicker than that on the rest of our bodies at some point in our evolution and this must have happened for a reason. There is really no accepted explanation, however some advantages.…


Why would we evolve a response that lets others know that we are embarrassed or stressed


Jack Dikian
February 2012

For the next 10 days I thought I’d share what New Scientist published back in 2009 examining the eccentricities of humans, what impact these have in overall survival value and evolutionary rationale.

Blushing is the involuntary reddening of people’s face and neck due to embarrassment or emotional stress. It is thought that blushing is the result of an overactive sympathetic nervous system. Why would we evolve a response that lets others know that we are embarrassed or stressed.