Only 2% of the worlds population is blonde.
15
In 1996, research found that having excessive body hair is linked to higher intelligence.
23
Intelligent people have more zinc and copper in their hair.
233
Only 2% of the Earth's population are natural redheads.
13
Ancient Greeks believed that redheads turned into vampires after they died.
40
Redheads require up to 20% more anesthesia to be knocked out.
112
