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 ...

Time travel is deterministic and locally free, a paper says—resolving an age-old paradox. This follows research observing that the present is not changed by a time-traveling qubit. It’s still not very ...

Time travel is deterministic and locally free, a paper says—resolving an age-old paradox. This follows research observing that the present is not changed by a time-traveling qubit. It’s still not very ...

"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 ...

This concept closely mirrors Jevon's Paradox, which states that the more efficient a resource becomes, the more it is consumed. The longer it takes to automate an end-to-end process, the less likely ...

She was taller than me. Prettier and with better muscle tone. Shinier hair and perfect skin and teeth. Which was odd because she claimed she was me — from the future. “Mmmmf!” I said. “Sorry about the ...

Imagine a scenario in which you visit a friend’s home and, to your shock, discover a time machine sitting in her living room. After a few jaunts to check out some dinosaurs, stir up a little trouble ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Einstein's theory of special relativity teaches us that time is relative. But what does it mean ...