PhysicsPhysicists determined the paper most likely to give you a paper cut An experiment with a robot and gelatine determined that 65-micrometre-thick paper is the most prone to slicing our skin – but it can also make for a handy recyclable knife ¿ìè¶ÌÊÓÆµ
PhysicsQuantum ‘super behaviour’ could create energy seemingly from nothing It should be possible to combine several quantum states, each with almost no energy, to create a single quantum state containing unexpectedly energy-rich regions ¿ìè¶ÌÊÓÆµ