Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
A man's beard grows fastest when he anticipates sex.
239
You forget 90% of your dreams.
256
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
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198
