People are marking the start of the winter and summer solstices across the globe. North of the equator, celebrations welcome ...

The eastern Pacific Ocean has seen a historic run of activity as the Atlantic remains dormant. Forecasters point to ...

At any given time, about two-thirds of Earth's surface is covered by clouds. Overall, they make the planet much cooler than ...

The Equator is a line of latitude that bisects the globe at its widest point, and where the hours of light and darkness are equal throughout the year. The Equator passes through 13 countries ...

The globe above shows the Northern and Southern Hemispheres divided by the Equator. The Arctic Circle surrounds the North Pole at 66.5°N and the Antarctic Circle surrounds the South Pole at 66.5°S.

Buckle up. The world’s most influential natural weather feature is shifting gears. An El Niño is building along the equator in the eastern Pacific Ocean, and chances are above normal it will be ...

As temperatures rise, many tropical species once confined to the warmest parts of the globe are expected to climb to higher altitudes and creep farther from the equator. That already may be ...

A study published Thursday in the journal Science found that the ocean is changing color as it warms. By analyzing satellite ...