The work of two 1998-99 student groups will culminate within the span of a week as the scholars in the Ronald E. McNair Postbaccalaureate Achievement Program at the University of Colorado at Â鶹ӰԺ present their research discoveries in the 1999 Summer Colloquium. The presentations, with topics ranging from art history to molecular, cellular and developmental biology, will be held Thursday and Friday, July 29-30, from 9 a.m. to noon in Hale 270, and Aug. 5-6 in Duane Physics G1B20.