PhysicsWhy I still love reckoning with the quantum gravity problem General relativity is an astonishingly beautiful theory, and grappling with why it disagrees with quantum mechanics is a joy, says Chanda Prescod-WeinsteinComment
EnvironmentIn the city, anyone can be a naturalist-explorer By opening their eyes and hearts to the many distinctive – but overlooked – urban habitats, city dwellers can reconnect with nature, says Menno SchilthuizenComment