Cambridge has a very strong tradition in this field. Students include Isaac Newton, who made lots of experiments in Trinity College. Francis Bacon developed the Scientific method which is the starting point of today's science. G. H. Hardy and Srinivasa Ramanujan did a lot in pure mathematics. James Clerk Maxwell found out more about electromagnetism. In biology, Charles Darwin made his theory about natural selection while Francis Crick and James D. Watson discovered the structure of DNA. Also David Attenborough, who is now a television presenter, was a science student at Cambridge.