tate 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 discussion 5:00-5:15 Break 5:15-6:00 pm Enzyme Metallocenters and Origins/sulfides John Peters, Mont