Icy clouds could have kept early Mars warm enough to form rivers and lakes, a new study using computer models suggests.

"Our results highlight how interconnected the Earth system is, with changes in one part of the planet driving changes in another."

"Our results highlight how interconnected the Earth system is, with changes in one part of the planet driving changes in another."

Climate change has caused the decine of "shorefast ice," vital to Arctic residents for hunting, fishing, and connecting with neighbors, researchers say.

"The cooling of the Southern Ocean over three decades is really unusual," given the warm-up happening everywhere else.

By 2050, sea ice at the North Pole could be gone, researchers say. But how long the disappearance lasts is up to us.

The huge machine keeps ice at the right temperature to examine how melting glaciers slide. It led to a new "slip law" to benefit future research.

Researchers used robotic kayaks to track meltwater and discovered that massive tidewater glaciers may be melting a lot faster than anyone thought.

Increased freshwater from melting Antarctic ice sheets and increased wind have reduced the oxygen in the Southern Ocean and made the waters warmer and more acidic, geoscientists report.

For every degree of increase in global temperature, there will be about 6 days less of ice per year on rivers that freeze, researchers say.