David J. Barclay, Geology Department, had his paper accepted for presentation at the 2010 annual meeting of the Geological Society of America, being held Oct. 31-Nov. 3 in Denver Colorado. Barclay will present “High-Resolution Valley Glacier Records from Southern Alaska for the First Millennium A.D. Ice Advance and Subsequent Medieval Warm Period.” More than 6,000 scientists are expected to attend the annual meeting.