SpaceThe problem of cosmic inflation and how to solve it One of the best-performing models in cosmology is also one with the least physical rationale behind it. Columnist Leah Crane says this leaves us with a puzzle that could make or break physics as we know it Comment
MindWhy is it so hard to change your mind? Changing your opinion can be difficult, and it’s sometimes even seen as a flaw. But research shows being open-minded has a host of benefits. Columnist David Robson finds there are a few simple ways to encourage yourself to withstand the discomfort that gets in the way of mental flexibility Comment