Burton (Mack) Kennedy completed his PhD in Planetary Science with a focus on early solar system isotopic structures and chronology from Washington University, St. Louis in 1981. Subsequently, he was awarded a post doctoral research position in the UC Berkeley Department of Physics. During his tenure in the Physics Department, he established a noble gas isotope geochemistry lab designed specifically to develop and use noble gases and their isotopes as natural tracers for fluid processes in the Earth’s crust. In 1991, Kennedy joined the Earth Sciences Division at Berkeley Lab, as a staff scientist, incorporating the noble gas laboratory into the newly founded Center for Isotope Geochemistry, Directed by Prof. Don DePaolo. While a member of ESD Kennedy has served as the Group Leader for the Environmental Measurement Laboratory, providing geochemical analytical support to ESD (1995-2001); the Group Leader for the Center for Isotope Geochemistry (1999-Present); and the ESD Program Lead for Geothermal Energy Development (2001-Present).