MathematicsExplore the mind-bending and paradoxical art of M C. Escher A new retrospective of the artist beloved by mathematicians opens this week. Get up close to the art with our interactive story Regulars
SocietyGame theory explains why the US's goals in Iran keep changing The ongoing conflict around the Strait of Hormuz has become a situation in game theory known as a war of attrition. The maths behind it can help explain what's going on, says Petros Sekeris Comment