Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346
A man's beard grows fastest when he anticipates sex.
239
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Gorillas can catch human colds and other illnesses.
205
We forget why we have entered a room because passing through doors creates an ‘event boundary’ causing the brain to file away what we were just thinking about.
26
Babies crawl an average of 200m a day.
212
A human being loses an average of 40 to 100 strands of hair a day.
133
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11