SCUSSION 2:30-3:00 pm Break 3:00-3:30 pm Life as a Geochemical Process Everett Shock Arizona State University 3:30 -4:00 pm Metabolism and the Early Earth Roger Buick University of Washington 4:00-4:30 The Habitability of the Early Earth Steve Mojzsis, University of Colorado 4:30-5:00 pm Open disc