VideoWhy quantum physics says there’s a multiverse Most people think the multiverse is just about "what-if" scenarios – other versions of you where you took that job in another city or turned left instead of right. But to a physicist, the multiverse isn't a storytelling device; it’s a mathematical consequence of our best theories of the universe Video
PhysicsHow a century-long argument over light’s true nature came to an end Two of the forefathers of quantum theory, Albert Einstein and Niels Bohr, had a famous argument over whether light is a wave or a particle. Columnist Karmela Padavic-Callaghan finds that the matter has been settled once and for all Comment