Tigers can see 6 times better at night than humans.
305
There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
There are about 255 babies born worldwide every minute.
46
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
The human brain is more active during sleep than during the day.
28