Giraffes often sleep for only 20 minutes in any 24 hours. They may sleep up to 2 hours (in spurts - not all at once), but this is rare. They never lie down.

The wingspan of a Boeing 747 is longer than the Wright brother's first flight.

One in every 2000 babies is born with a tooth.

If you could drive your car straight up you would arrive in space in just over an hour.

A quarter of the world's plants are threatened with extinction by the year 2010.

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.

Every second around 100 lightning bolts strike the Earth.