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Graham is a communicator of science and a geomicrobiologist. His graduate research has focused on characterizing the geochemistry and mineralogy of sulfur-rich deposits and alteration features at the Borup Fiord Pass sulfide spring system in the Canadian High Arctic. This has included detections of unexpected and rare forms of elemental sulfur (beta- and gamma-cyclooctasulfur) as well as an exotic form of hydrated sulfate carbonate (rapidcreekite) in the Borup system. Graham is interested in determining the role that biology may play in the formation of these rare mineral forms as well as what these findings may mean for the search for extraterrestrial life on worlds such as Mars and Europa. Furthermore, Graham specializes in sharing science with the public; from public talks and blogging to museum exhibit facilitation, Graham has found a variety of methods to communicate science with people of all ages and backgrounds.