'Selfies' are everywhere - from Kim Kardashian, queen of the selfie, to the Queen of England photobombing the Australian hockey team's selfie in 2014, you can't open a newspaper, or visit a news website, without seeing one. Recent technology, such as the selfie stick, and camera phones, have helped make the selfie a global trend, so you would be forgiven for thinking that this is a modern trend. But in fact, the first known selfies date from about 40,000 years ago and are han