Human hair and fingernails continue to grow after death.
7
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Tigers can see 6 times better at night than humans.
305
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
Modern humans first appeared about 200,000 years ago, but record keeping didn't begin until about 6,000 years ago. That means about 97% of human history is lost.
21
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
A man's beard grows fastest when he anticipates sex.
239