The science of time travel

A theoretical physicist works out the mathematic equations that show time travel to be possible. His autobiography details black holes and circulating lasers, which he claims could be the means to returning to his past and the father he lost.

Guests

• Ronald Mallett: professor of physics at the University of Connecticut. He's the author of "Time Traveler: A Scientist's Personal Mission to Make Time Travel a Reality." Director Spike Lee has acquired the rights for a film he plans to write and direct.

Resources

• Ronald Mallett's Web site
• Ronald Mallett on This American Life