PhysicsIn the quantum world, uncertainty reigns – or is it all in the mind?Schrödinger's dead-and-alive cat embodies the uncertainty of the quantum world. But whether parallel realities truly exist is a question less of science than beliefFeatures
SpaceStudying the universe’s origins hint that its beginning has no end The cosmos is stranger than we ever imagined and new bubbles of space-time may pop up and grow continuously with no beginning or end, writes Chanda Prescod-Weinstein Comment