Travelling in time through any means other than living normally in a four-dimensional relativistic universe is almost certainly impossible. Yes, it's true that we do actually have a current world ...

If you value your data—whether it’s some perfect photos you took last weekend, your entire music collection on iTunes, or your draft of the next great American novel—you must stay on top of regular ...

Time travel has been a popular science-fiction theme since H. G. Wells wrote his celebrated novel The Time Machine in 1895. But can it really be done? Is it possible to build a machine that would ...