PhysicsThe black hole paradox that thwarts our understanding of reality Black holes devour stuff and then shrivel away over billions of years. Explaining what happens to anything that falls in explodes our current theories of physics, says cosmologist Paul DaviesFeatures
HumansThe surprising upsides of spite and how to harness them In an era of social media cancelling, our nasty side has never been more prominent. But the latest research suggests that, when wielded right, petty ill will can be a force for good Features