PhysicsStrange upward lightning shoots out X-rays as it rises to the clouds Tall buildings made from electrically conductive materials can send lightning bolts up into the heavens during a thunderstorm, and they generate X-rays at the same time News
CommentThe 10 best time travel movies ever made, according to a metaphysicist From Back to the Future to Tenet and Interstellar, the joint director of the Centre for Time reveals her favourite time travel movies – both consistent and inconsistent (hello Marty McFly) Culture