LifeThe animals revealing why human culture isn't as special as we thought Even animals with very small brains turn out to have cultural traditions, which poses a puzzler for biologists wondering what makes human culture unique Features
SpaceIs our cosmos just a membrane on the edge of a far stranger reality? String theory may be our best attempt at a theory of everything, except that it can't describe an expanding universe like ours. Now a radical new twist on the idea could finally fix that – but it requires us to completely reimagine reality Features