Joseph Smyth is a Professor in the Departement of Geological sciences
at the University of Colorado.  He operates the Mineral Structures
Laboratory.  His research centers on the atmoic structures of natural
materials and how these structures control the physical properties and
distributions of elements in earth. His research areas include mineral
physics and crystallography, igneous and metamorphic petrology and
geochemistry, and he has done work on petrology models of the Moon and
Mars.  Some of his recent work focuses on searching for Earth's lost
oceans, and geophysical and mineralogical constraints on H cycling in
the Deep interior of the Earth.