Dinosaurs ruled the Earth for over 160 million years, from the Triassic period around 230 million years ago through the Jurassic period and until the end of the Cretaceous period around 65 million years ago.

The number of times a cricket chirps in 15 seconds, plus 37, will give you the current air temperature.

It is illegal for a portrait of a living person to appear on U.S. postage stamps.

AMAZING FACTS