One in 500 humans has one blue eye and one brown eye.
145
A man is more likely to get a woman's phone number if he is accompanied by a dog.
20
Humans are capable of running 40 mph according to a study by bio-mechanical expert Dr. Matthew Bundle. Today's fastest man, Usain Bolt, has a top speed of 28 mph.
34
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
City dwellers have longer, thicker, denser nose hairs than country folks do.
48
Only 2% of the Earth's population are natural redheads.
13