May 19, 2010, at the Linda Hall Library of Science, Engineering & Technology Science fiction has introduced us all to the idea of traveling into the past - but is it really possible? Sean Carroll, Research Professor Physics at Caltech, explores how time travel would possibly work in the context of
146:46
151:27
66:39
86:40
63:36
69:08
155:24
80:10
55:31
53:16
56:36
69:09
131:36
77:24
147:18
78:30
108:31
87:44
152:23
118:54