th 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, Montana State University George Cody, Carnegie Inst 6:00-6:15 pm Open Discussion 6:30 pm Dinner—House of Tricks, Tempe, Arizona Saturday, Febr