MathematicsThe bizarre story of a maths proof that is only true in Japan A 500-page proof that only a handful of people in the world claim to understand kicked off a saga unlike anything else in the history of mathematics – and now there’s a new twist to the story, says Jacob Aron Comment
EnvironmentHiking parking costs is a great way to reduce car usage A huge increase in parking costs in my home of York has provoked outrage. This may sound like a local problem, but reducing car use is an issue for all of us, says Graham LawtonComment