Humans have always wanted to change the past or future. However, as much as we might like to travel through time, this concept raises paradoxes (things that don’t make sense) and philosophical ...

The grandfather paradox is just one of the thorny logical problems that arise with the concept of time travel. But one physicist says he has resolved them.

One of the most famous paradoxes ever, the grandfather paradox, cautions against making changes that could break the timeline if you were to ever travel back in time. But, according to one ...