SpaceWe may have finally solved an ultra-high-energy cosmic ray puzzle The IceCube neutrino detector has allowed researchers to resolve a debate about what types of particles make up ultra-high-energy cosmic rays – but much remains unknown about these rare events News
PhysicsAmbitious book on quantum physics still fails to be accessible A new book on quantum physics is pleasingly full of cutting-edge topics. Yet it isn't the accessible work it promised to be Culture