Time travel has shifted from pure fantasy to a serious, if highly constrained, topic in modern physics. The equations that ...

Ocean heat is quietly rewriting the rules of the planet’s most dangerous storms, loading hurricanes with more fuel than the current scale was ever designed to capture. As those waters warm, a growing ...

For hot, Jupiter-mass planets around normal stars, astronomers often look for molecules such as water vapor, methane, and carbon dioxide. These show up repeatedly in planetary atmosphere models ...