PhysicsThe weird rules of temperature get even stranger in the quantum realm Can a single particle have a temperature? It may seem impossible with our standard understanding of temperature, but columnist Jacklin Kwan finds that it’s not exactly ruled out in the quantum realm Comment
MathematicsWhy it’s easy to be misunderstood when talking about probability Mathematicians rely on numbers, but finding words to explain different levels of certainty has stymied everyone from the ancient Greeks to the most famous modern philosophers. Maths columnist Jacob Aron tells the story of how a CIA analyst finally cracked it Comment