To simulate the Earth, he suggests that it would be necessary to convert the entire stellar mass of a globular cluster into ...

On a warm afternoon last fall, Steven Caron, a technical artist at the video-game company Quixel, stood at the edge of a redwood grove in the Oakland Hills. “Cross your eyes, kind of blur your eyes, ...

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 ...