Scientists say a record-smashing March heat wave in the U.S. Southwest shows climate change is already driving more dangerous ...

New observations are helping scientists peer beneath the Sun’s surface, revealing where its magnetic activity may truly begin. Every 11 years, the Sun’s magnetic field reverses. As that cycle unfolds, ...

Like the lead character of “Project Hail Mary,” some scientists are proposing ways that life might exist beyond a star’s “habitable zone,” often considered the gold standard of potential livability ...

There’s a place in Colorado where the landscape is so otherworldly that you half expect to see a Mars rover trundling across the horizon. Star Dune at Great Sand Dunes National Park near Mosca rises ...

Unusual March heat has pushed temperatures into record territory in parts of the West. More extremes are expected in the days ...

The spring equinox marks the first day of spring today, but daylight actually lasts several minutes longer than night. Here's ...

Today's sea level rise is significant enough to slow the rotation of the planet by just over a millisecond per century.

But in the American West, it feels like we skipped right to summer. A record-smashing heat dome has settled over a huge swath of the United States, from California to Montana and down to Texas. At my ...