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 colour blue has a calming effect. It causes the brain to release calming hormones.

All US Presidents have worn glasses; some just didn't like being seen wearing them in public.

AMAZING FACTS