Roger Buick is a geologist interested in the origin and earliest evolution of life on Earth, and how that can be used as an analog for life elsewhere in the Universe. His research techniques lie at the intersection of geology, biology and chemistry, examining the oldest and best-preserved rocks available. He has worked on projects dealing with the evolution of bacterial metabolism, the development of continental crust, the changing composition of the atmosphere and seawater, and molecular fossils in Precambrian rocks. His fieldwork has taken him to the Australian outback, the Greenland icecap and the Canadian north woods, among other places.