Clint Witchalls is a freelance health and science writer. He has written for a broad range of titles including the Economist, Newsweek, New Scientist, Intelligent Life, Guardian, Observer, and Independent. He has also completed several stints as a contract editor, including six months as a consumer editor at the BMJ Evidence Centre, one year as opinion editor at New Scientist and six months as news editor at the British Dental Journal. Clint wrote a book about his year as a participant in a clinical trial for the 'male pill'. The book, Die Pille und Ich, was published by Rowohlt in 2007. He also co-wrote a children’s book called How Cool Stuff Works (DK) that sold over 3 million copies. Clint has an MSc in creative non-fiction writing from Imperial College London.