Everything Everywhere All at Once: could the multiverse be real?

The film Everything Everywhere All at Once has enjoyed critical acclaim and awards success. Ahead of the Oscars, where it’s tipped to sweep the board, Ian Sample speaks to theoretical physicist and philosopher Sean Carroll about why we seem to be drawn to the idea of multiple worlds, and what the science says about how the multiverse might actually work. Help support our independent journalism at theguardian.com/sciencepod