If you shuffle a pack of 52 cards 8 times by dividing it exactly in half and perfectly interlacing one card at a time from alternate halves, the deck will return to its original order. This trick is used by skilled magicians and card sharks. by web
Oysters are transexuals - they change from one sex to another and back again depending on which is best for mating. by curious..
If all the blood vessels in the adult human body were laid end to end they would stretch to approximately 160,000 kilometres; four times around the Earth. by curiouser.co.uk