Euan Nisbet leads the atmospheric methane group at Royal Holloway, focussing on the modern methane budget in both the Arctic and the Atlantic tropics. His geological work on the early Earth has been in Zimbabwe, Canada and Australia, especially in the Belingwe greenstone belt, Zimbabwe, studying komatiite volcanism, stromatolites and early microbial evolution. He holds the Hutchison medal of the Geological Association of Canada and has given the William Smith (2003) and Fermor (2000) lectures of the Geological Society of London, as well as being an invited speaker at the annual meetings of the US National Academy in 1992 and the Australian Academy in 2009. Books include The Young Earth: an Introduction to Archaean Geology (Allen and Unwin), Living Earth (Harper Collins), and, on global change, Leaving Eden (C.U.P.), with later Chinese and German translations).