The air at the summit of Mount Everest, 29,029 feet is only a third as thick as the air at sea level.

Micro-organisms have been brought back to life after being frozen in perma-frost for three million years.

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

Every year lightning kills 1000 people.

The largest dinosaur ever discovered was Seismosaurus who was over 100 feet long and weighed up to 80 tonnes.

More germs are transferred shaking hands than kissing.

90% of those who die from hurricanes die from drowning.

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