A memorial service celebrating the life of Anthony Barker, associate dean of natural sciences and a professor of physics at the University of Colorado at Boulder, will be held Thursday, March 11, at 3 p.m. in the Old Main Chapel. The service will be followed by a reception in the CU Heritage Center on the third floor of Old Main. Barker, 42, died of natural causes the weekend of Feb 28-29 at his ski condominium in Steamboat Springs, Colo.