The word 'hello' first appeared in writing in 1826, but wasn’t used as a greeting until 1877 - when it became the standard way to answer the telephone.

The five rings on the Olympic flag represent the five inhabited continents, with the Americas as one. Their colours are the most common found on flags around the world.

Your zodiac sign is likely wrong. They were created over 3,000 years ago; the Earth's tilt has since shifted, altering the constellations' positions in the sky.

The youngest world leader in history was King Alfonso XIII of Spain, who assumed the position in 1886 at 0 days old.

The Isle of Man TT is the world's deadliest race. This motorcycle race has been held annually since 1908, and only twice has no one died.

Wind turbines kill up to 100,000 birds annually in the UK. Interestingly, painting one of the blades black can reduce bird deaths by 70%.