Your fingernails grow faster in summer.
744
Early American humans hunted car-size armadillos and used their shells for houses.
12
It has been scientifically proven that stroking a cat can lower one's blood pressure!
456
Enamel is hardest substance in the human body.
61
Our Right Lungs takes more air than our left lung.
194
It takes about 20 seconds for a red blood cell to circle the whole body.
102
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
32
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22