Why did summers feel endless as a kid, but now entire years seem to vanish? Does time actually speed up as we get older – or does it just feel that way? Conspiracy theorists suggest things like the “We’re all living in a simulation” or “The Large Hadron Collider knocked us into a parallel universe”. But scientists have been studying this for hundreds of years, and the scientific answers are surprisingly weird. By the end of this video, you’ll understand what’s happening to your sense of time — and whether you can actually slow it down.