EnvironmentUK government backs plan to harvest solar power from space Science minister George Freeman says he won't write a cheque for pioneering plans to beam energy down from a solar array in orbit, but the UK government will offer its support News
PhysicsWhat the thermodynamics of clocks tell us about the mysteries of time Surprising new insights about the strange physics underlying how clocks work could transform our understanding of time's arrow – and hint at how time works at the quantum scale Features