Englishman Roger Bacon invented the magnifying glass in 1250.

Quasars emit more energy than 100 giant galaxies.

The Earth spins at 1,000 mph but it travels through space at an incredible 67,000 mph.

There are 60,000 miles of blood vessels in the human body.

The grey whale migrates 12,500 miles from the Artic to Mexico and back every year.

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

The dinosaurs became extinct before the Rockies or the Alps were formed.

Alfred Nobel invented dynamite in 1866.