After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
The human body contains over a billion miles of DNA.
147
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346
Playing Tetris after a traumatic event can prevent the development of traumatic memories and reduce the chance of having flashbacks.
29
Early American humans hunted car-size armadillos and used their shells for houses.
12