PhysicsWhat putting big things in quantum states can tell us about reality In principle, there should be no limit on how large objects can get and still display quantum behaviour like superpositions. Physicists testing the idea hope to reveal clues about quantum gravity Features
EarthThe lost fossil meteorites carrying the secrets of Earth’s past Fossil meteorites are one of the hardest geological treasures to discover – but now a spate of finds is revealing surprises about Earth’s ancient atmosphere Features