At 15 inches the eyes of giant squids are the largest on the planet.

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).

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

The air at the summit of Mount Everest, 29,029 feet is only a third as thick as the air at sea level.

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

An individual blood cell takes about 60 seconds to make a complete circuit of the body.

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

The low frequency call of the humpback whale is the loudest noise made by a living creature.