It is not possible to tickle yourself. The cerebellum, a part of the brain, warns the rest of the brain that you are about to tickle yourself. Since your brain knows this, it ignores the resulting sensation.

In 1897, Bayer, who is the makers of Aspirin, once marketed the drug heroin.

The smallest frog is the "Brazilian baby frog", which is smaller than a dime.

AMAZING FACTS