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Every second around 100 lightning bolts strike the Earth.

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.

Without its lining of mucus your stomach would digest itself.

At 15 inches the eyes of giant squids are the largest on the planet.

The world’s smallest winged insect, the Tanzanian parasitic wasp, is smaller than the eye of a housefly.

Every hour the Universe expands by a billion miles in all directions.

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

Our oldest radio broadcasts of the 1930s have already travelled past 100,000 stars.