Dr. David Des Marais is a member of the MRO Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) science team. He assists in the interpretation of the significance of CRISM data for astrobiology. CRISM has confirmed and greatly extended earlier observations of phyllosilicates and sulfates. CRISM has also discovered deposits of silica and other aqueously formed mineral deposits that are significant for astrobiology. Dr. Ted Roush is also a CRISM co-investigator and has contributed to the CRISM spectral library that is used for compositional interpretation of observational data. His efforts during the mission focus on regions of Mars that have been altered by water, and the Martian moons, Phobos and Deimos. Dr. Robert Haberle is a co-investigator on the Mars Color Imager (MARCI) camera science team. His principle role is to interpret MARCI data using the Mars General Circulation Model, based at Ames. He studies the temporal and spatial variability of clouds, dust storms, and ozone in the Martian atmosphere.