When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Playing Tetris after a traumatic event can prevent the development of traumatic memories and reduce the chance of having flashbacks.
29
The human body contains over a billion miles of DNA.
147
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
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
The average person's skin weighs twice as much as their brain.
131
Tigers can see 6 times better at night than humans.
305