Heat is not supposed to behave like this. In everyday life, warmth seeps and diffuses, spreading from hot to cold in a slow, ...

“Second sound is the hallmark of superfluidity, but in ultracold gases so far you could only see it in this faint reflection ...

OK. One of the times I went running this week in our nation's capital, it was early in the morning but already 82 degrees and 82% humidity. Washington, D.C., has had daytime temperatures over 100 this ...

As the frequency and intensity of heat waves increase across the U.S., a similar but more striking phenomenon is occurring in American rivers. Subscribe to our newsletter for the latest sci-tech news ...