The call of the humpback whale is louder than Concorde and can be heard from 500 miles away.

Utopia ia a large, smooth lying area of Mars.

The first synthetic human chromosome was constructed by US scientists in 1997.

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

A healthy person has 6,000 million, million, million haemoglobin molecules.

To escape the Earth's gravity a rocket need to travel at 7 miles a second.

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

If our Sun were just inch in diameter, the nearest star would be 445 miles away.