If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
Mushrooms are more closely related to humans than they are to plants.
47
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
Only humans shed emotional tears.
331
Pain occurs when sounds are above 130 db.
124
Your thumb is about the same size as your nose.
124