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

10 percent of all human beings ever born are alive at this very moment.

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

The speed of light is generally rounded down to 186,000 miles per second. In exact terms it is 299,792,458 m/s (metres per second – that is equal to 186,287.49 miles per second).

Christian Barnard performed the first heart transplant in 1967 - the patient lived for 18 days.

Microbial life can survive on the cooling rods of a nuclear reactor.

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

The saturn V rocket which carried man to the Moon develops power equivalent to fifty 747 jumbo jets.