Lecture 42: Time Travel
Can we travel through time? This is not a frivilous, science-fiction\nkind of question. Certain restricted kinds of time travel are in fact\nallowed by classical General Relativity. This lectures takes up this\nquestion, and looks at some of the surprising answers that have been\nfound. Recorded 2006 March 8 in 1008 Evans Laboratory on the Columbus\ncampus of The Ohio State University.