Physics Colloquium is Feb. 27 A physics colloquium will be held at 4 p.m. Friday, Feb. 27, in 211 Witmer Hall. Coffee and cookies will be served at 3:30 p.m. in 215 Witmer Hall. The talk, "Optical Dating for Remote In-Situ Geochronology on the Surface of Mars" will be presented by Ken Lepper, North Dakota State University. -- Dr. Wayne Barkhouse, Assistant Professor, Physics, wayne.barkhouse@und.nodak.edu, 777-3520