Prof. Jan Amend is an Associate Professor at the University of Washington in St. Louis. He received his PhD in Geochemistry at UC Berkeley in 1995. Professor Amend's research group combines geochemistry, microbiology, and molecular biology to study the chemical connections between microorganisms and their natural environment. The approach combines experimental, theoretical, analytical, and field components. Most of Professor Amend's research efforts are aimed at the microbial geochemistry of hydrothermal systems. Since microbes thriving at very high temperatures (hyperthermophiles) were first isolated several decades ago, they have captured the interests of microbiologists, molecular biologists, and biochemists. Because the metabolisms of these novel organisms are intimately tied to the chemistry of their natural environments, geochemists have started to investigate the roles of thermophiles in marine and continental surface and subsurface environments. Professor Amend?s field areas include the hydrothermal systems of the Aeolian Islands, north of Sicily, Italy and those at Yellowstone National Park in the western United States, two of the most prolific sites of hyperthermophilic activity.