Release Message:  This documentary is about the physics of wormholes and the limitations physics places on the possibility of time travel. Interviews include Stephen Hawking.

Description:  On 2 December 1996 the British Broadcasting Corporation broadcast a documentary in the Horizon series called ``The Time Lords''. The BBC subsequently sold this documentary to the PBS NOVA series. It was re-titled ``Time Travel'' and re-broadcast in the USA on 12 October 1999. This documentary is about the physics of wormholes and the limitations physics places on the possibility of time travel. It's a nice introduction to the subject for the general public. People interviewed for the program, in addition to myself, include: Stephen Hawking, Kip Thorne, John A. Wheeler, Carl Sagan, ...