But once you go back, you might not like what you find.

No one has yet managed to travel through time – at least to our knowledge – but the question of whether or not such a feat would be theoretically possible continues to fascinate scientists. It's a ...

Time is one of the most intriguing concepts in physics, and yet, it's something that we often take for granted. But what if the way we experience time moving only forward defies the very laws of ...

Time travelers might not have to worry about creating a world where their parents never met. It’s a worry of time travelers everywhere. What if they go back in time and do something terrible, like ...

"The past is obdurate," Stephen King wrote in his book about a man who goes back in time to prevent the Kennedy assassination. "It doesn't want to be changed." Turns out, King might have been on to ...