PhysicsMatrix villain spawns 177,000 ways to knot a tie Inspired by a style from the film The Matrix Reloaded, mathematicians have found thousands of new ways to knot a tie. Not all will make it to the catwalk News
SpaceStephen Hawking's new theory offers black hole escape The world's most famous living scientist has a new mind-bending theory about black holes. Rather than getting sucked into a singularity of confusion, read our explainer News