We all thought time travel was something out of a sci-fi movie, with DeLoreans, hot tubs, Quantum Realms, wormholes, and quirky inventors. But what if it’s been with us all along? Well, believe it or ...

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 ...