Only humans shed emotional tears.
331
There are about 255 babies born worldwide every minute.
46
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
The human brain is more active during sleep than during the day.
28
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
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
Early American humans hunted car-size armadillos and used their shells for houses.
12
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13