By trapping huge amounts of water on land, big dams built by humans have slightly changed how Earth spins and where its poles ...

Our planet’s magnetosphere has seen dramatic shifts across its history—even total reversals—but this recent wrinkle doesn’t ...

"Some of our ancestors were very skilled observers." A team of international researchers say they've uncovered new data on ...

The speed at which glaciers move changes predictably each year, according to the first-ever global map of how glacier and ice sheet speeds vary with the seasons. Knowing this yearly rhythm could help ...

Utqiagvik sits 320 miles north of the Arctic Circle on Alaska's northern coast, making it the northernmost city in the United ...

It's Dec. 1, but despite the incoming snow and ice, the official start to winter is still three weeks out. Here's when winter ...

It's Dec. 1, but despite the snow we've been getting, the official start to winter is still three weeks out. Here's when ...

The winter solstice marks the shortest day and longest night of the year, but when is it in 2025 and what more does it ...

Did you know that there are actually two different sets of seasons, and thus two different winters, every year?

Calendars found in homes across the country usually say winter begins on Dec. 21, when in reality the season starts three ...