SpacePlanes, trains and wormholes For Einstein, they were just a sideshow, but for frontier physicists proving their existence, let alone building them, is the stuff of dreams. Marcus Chown goes in search of wormholes Features
TechnologyA quantum revolution for computing By harnessing the bizarre properties of the quantum world, physicists believe they could construct a computer with undreamt-of power. Julian Brown explains how it might be done Features