PhysicsCreate the ultimate world clock with a quantum link A network of ultra-precise atomic clocks could be kept in sync with the spooky property of entanglement, creating the first truly global time stamp ¿ìè¶ÌÊÓÆµ
PhysicsDoctor Who anniversary: 12 ways to become a Time Lord The world's longest-running science fiction show has its 50th anniversary on 23 November. We examine the ways that the fiction is rooted in reality ¿ìè¶ÌÊÓÆµ