The average sperm cell swims at 8 inches per hour.
4
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
199
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111
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
Playing Tetris after a traumatic event can prevent the development of traumatic memories and reduce the chance of having flashbacks.
30
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15