Only humans shed emotional tears.
331
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
The human brain has the capacity to store everything that you experience.
4k
A human being loses an average of 40 to 100 strands of hair a day.
133
An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73
On average, there's 100 billion neurons in the human brain.
83
Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346