We all speak one language, with many people choosing to learn another at school or to make life easier when travelling abroad so that we can communicate with others. Perhaps you are considering taking up a language to help you get a job, in which case German and French have been voted the best to enhance your employment prospects. But were you aware that there are a recognised 7,000 languages in the world? Or that there are a number of fictional languages, such as Furbish and Klingon? Our infographic looks at some of the amazing facts behind something we all take for granted.