On the day that Alexander Graham Bell was buried the entire US telephone system was shut down for 1 minute in tribute.

Even travelling at the speed of light it would take 2 million years to reach the nearest large galaxy, Andromeda.

The fastest speed a falling raindrop can hit you is 18mph.

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

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

One million, million, million, million, millionth of a second after the Big Bang the Universe was the size of a …pea.

It would take over an hour for a heavy object to sink 6.7 miles down to the deepest part of the ocean.

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