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

Hot water weighs less than cold water for a given volume. See more

The microwave was invented after a researcher walked by a radar tube and a chocolate bar melted in his pocket. See more

The screwdriver was invented before the screw. See more

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

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

An Octopus has 3 hearts. See more