A man's beard grows fastest when he anticipates sex.
239
Intelligent people have more zinc and copper in their hair.
233
Blonde hair is not exclusive to Europeans. Melanesians of the south Pacific evolved a different gene for blonde hair.
7
Only 2% of the Earth's population are natural redheads.
13
Some Chinese-made hair bands were fashioned from recycled condoms.
131
In 1996, research found that having excessive body hair is linked to higher intelligence.
23