Earth's climate has swung between ice ages and warmer periods for millions of years, driven by subtle changes in our planet's ...

Earth’s spin is not as steady as it looks. As ice melts and groundwater is pumped from deep aquifers to the surface, the ...

This year's Winter Solstice night is the darkest in over a decade.

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

The Earth's climate has been changing for millions of years under the influence of the gravity of neighboring planets. A new ...

Earth’s spin is not as steady as it looks from the ground. As ice sheets melt and aquifers are drained, scientists now say the planet’s axis has shifted by more than 30 inches, a subtle but measurable ...

New research shows Uranus’ fierce radiation belts were a short-lived blast from a solar storm, reshaping what Voyager 2 ...

PM? The winter solstice is still 2 weeks away, but sunsets in southern Colorado have already started getting later. Here's ...

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

The longest night of the year is nearing as we get closer to the first day of winter. Here's when to expect the season to change.