Only humans shed emotional tears.
331
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
On average a woman has 4 sexual partners in her lifetime.
-143
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Babies crawl an average of 200m a day.
212