Mushrooms are more closely related to humans than they are to plants.
47
Enamel is hardest substance in the human body.
61
There are about 255 babies born worldwide every minute.
46
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
A person can live without food for about a month, but only about a week without water.
156
Obsessive nose picking is called Rhinotillexomania.
101
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13