Sharks do not have a single bone in their bodies. Instead they have a skeleton made up of cartilage; the same type of tough, flexible tissue that makes up human ears and noses.

O.J. Simpson had a severe case of rickets and wore leg braces when he was a child.

Lake Baikal is the oldest freshwater lake on Earth, having formed between 20 and 25 million years ago.

AMAZING FACTS