Renowned Harvard University Professor Lisa Randall, one of the world's leading theoretical physicists and cosmologists, will speak at the University of Colorado at Â鶹ӰԺ on Monday, March 19, on hidden dimensions of the universe. A professor of theoretical physics at Harvard, Randall will speak at 7:30 p.m. in Macky Auditorium for the 42nd George Gamow Memorial Lecture. The talk will focus on concepts from her 2005 book, "Warped Passages: Unraveling the Mysteries of the Universe's Hidden Dimensions" and is free and open to the public.