Have you ever made a mistake that you wish you could undo? Correcting past mistakes is one of the reasons we find the concept of time travel so fascinating. As often portrayed in science fiction, with ...

The proponents of the idea of a global climate crisis are fond of saying that when it comes to climate change, “the science is settled.” But in fact that is just a way of telling their opposition to ...

Tiny little threads whizzing through spacetime and vibrating incessantly: this is roughly how you can imagine the universe, according to string theory. The various vibrations of the threads generate ...