Taxonomy is the science of naming a new species.
The Danish language has no word for “please”.
The human skull consists of twenty-two bones: eight cranial bones and fourteen facial skeleton bones.
The human eye can see between seven to ten million colours, while computers can display around 17 million.
Amphibians evolved from fish with lungs and limbed fins, helping them adapt to dry land.
Football was invented in China around 476 B.C - today it's played in more than 200 countries.
The world’s first postage stamp was issued in Britain on the 1st of May 1840.
The moon takes 27.3 days to circle the Earth.
Over 60 million tourists visit New York City each year.
The rings inside a tree trunk are called annual growth rings.
Russia launched the first satellite in 1957 called Sputnik 1.
Over 130 million books have been published in modern history.