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 ...

For decades, physicists have relied on the principle of symmetry to simplify and understand the complex behaviors of subatomic particles. Symmetry in physics basically means that some rules of nature ...

For all of us concerned about the climate, 2023 was a grim year. One of the biggest uncertainties in predicting future climate change is the impact of clouds. Michael Allen speaks to the physicists ...