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

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.

The longest glacier in Antarctica, the Almbert glacier, is 250 miles long and 40 miles wide.

In October 1999 an Iceberg the size of London broke free from the Antarctic ice shelf .

Human tapeworms can grow up to 22.9m.

Every year over one million earthquakes shake the Earth.

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

The Australian billygoat plum contains 100 times more vitamin C than an orange.