Time feels like the most basic feature of reality. Seconds tick, days pass and everything from planetary motion to human memory seems to unfold along a single, irreversible direction. We are born and ...

To most of us, time feels as solid as the phone alarm that drags us out of bed or the calendar that fills up faster than we ...

For years, the idea that we might be living inside a vast computer program has drifted from philosophy seminars into blockbuster movies and Reddit threads. Now a group of theoretical physicists say ...