Bulls are not attracted to the colour red. See more

The first bar code was used on Wrigleys gum. See more

After billions of years, black holes become white holes and they spit out all the things they sucked up. See more

There are more bacteria in your mouth than the human population of the U.S.A. and Canada combined. See more

Bees can see ultraviolet light. See more

Butterflies taste with their feet. See more

It takes about 20 seconds for a red blood cell to circle the whole body. See more

Human thigh bones are stronger than concrete. See more

One quarter of the bones in your body, are in your feet. See more