A deck of playing cards has a king on each card that symbolises a famous monarch in history: Hearts represent Charlemagne, Spades represent King David, Clubs represent Alexander the Great The diamond represents Julius Caesar.   Legislation allowing …

The majority of home dust contains dead skin cells. Here's a fun piece of science trivia for you: Humans lose 200 million skin cells every hour, according to experts at Imperial College London, and these cells need to go somewhere when we're…