The logistics of time travel remains one of science fiction's great challenges. The thrill of tampering with the past or peering into the future is self-evident, but getting from here to there is what requires ingenuity. Over the years, from pulp novels to B-movies, the protagonists of chrono-warp adventures have hopped aboard time machines, zoomed through deep-space wormholes, prayed to God, hitched a ride with aliens, gotten high on experimental drugs, tumbled down interdimensional portals, intercepted radio waves, and adapted the theory of relativity. Compared to... More >>>