I have a form of time–space synesthesia, so the new year arrives for me in a very physical way. I feel myself move around the year, almost like I'm traveling along a structure. December sits low and ...

What is space-time? Depending on how fast you're moving or how close you are to Earth's gravity can change the way time feels. Einstein’s theory of general relativity views time similarly to width, ...

I have a form of time–space synaesthesia, so the new year arrives for me in a very physical way. I feel myself move around the year, almost like I’m travelling along a structure. December sits low and ...