Elephants have large, thin ears. Their ears are made up of a complex network of blood vessels which help regulate their temperature. Blood is circulated through their ears to cool them down in hot climates.

In one day, a human sheds 10 billion skin flakes. This amounts to approximately two kilograms in a year.

Two national capitals are named after U.S. presidents: Washington, D.C., and Monrovia, the capital of Liberia.

AMAZING FACTS