The coldest city in the U.S. is International Falls, Minnesota.

The distinctive spots that cover a giraffe's fur act as a good camouflage to protect the giraffe from predators. When the giraffe stands in front of trees and bushes the light and dark colouring of its fur blends in with the shadows and sunlight.

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

AMAZING FACTS