Physics

Lee Smolin argues that time is more fundamental than physical laws.

Sean Carroll and Alan Guth talk about time.

Past and future may not be what they seem.

How time travel might explain some of science’s biggest puzzles.

How time travel might explain some of science’s biggest puzzles.

If the constitution of nature itself were changing in time, how would you know?

To John Archibald Wheeler, the race to explain time was personal.

A bird’s-eye view on life and the universe.

What happened before the Big Bang?

Is a third-act twist to nuclear energy at hand?