PhysicsReality check: Closing the quantum loopholes Can the universe really be as weird as quantum theory suggests? Ingenious experiments are coming close to settling the issue, says Anil AnanthaswamyFeatures
PhysicsSea of photons made to act as one 'super-photon' For the first time, photons have been coaxed to march in lockstep as a Bose-Einstein condensate – the feat could help shrink electronic devices News