Without its lining of mucus your stomach would digest itself.

A dog's sense of smell is 1,000 times more sensitive than a humans.

Inbreeding causes 3 out of every 10 Dalmation dogs to suffer from hearing disability.

Light would take 0.13 seconds to travel around the Earth.

Wilhelm Rontgen won the first Nobel Prize for physics for discovering X-rays in 1895.

Somewhere in the flicker of a badly tuned TV set is the background radiation from the Big Bang.

Female black widow spiders eat their males after mating.

Humans have 46 chromosomes, peas have 14 and crayfish have 200.