The largest ever hailstone weighed over 1kg and fell in Bangladesh in 1986.

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

Koalas sleep an average of 22 hours a day, two hours more than the sloth.

Males produce one thousand sperm cells each second - 86 million each day.

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

Every year lightning kills 1000 people.

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

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