The hairs on a polar bear are not white, but clear. They reflect light, so they appear white. See more

A rat can last longer without water than a camel can. See more

365 different languages are spoken in Indonesia. See more

The can opener was invented 48 years after cans were introduced. See more

Starfish haven't got brains. See more

An octopus can change its shape and color to blend in with its surroundings. See more

Adolf Hitler had only one testicle. See more

Venus is the only planet in the solar system to spin backwards. See more

The screwdriver was invented before the screw. See more