If the human eye was a digital camera, it would have 576 megapixels.
25
It takes about 20 seconds for a red blood cell to circle the whole body.
102
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111
Early American humans hunted car-size armadillos and used their shells for houses.
12
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
The human sigh acts as a physiological reset button.
23
Gorillas can catch human colds and other illnesses.
205
There are about 255 babies born worldwide every minute.
46