By 3.6 billion years ago, Mars should have become too cold for liquid water, but something kept the rivers flowing.

At the end of the last global ice age, the deep-frozen Earth reached a built-in limit of climate change and thawed into a ...

On a cold, ancient Mars, rivers flowed and a lake the size of the Mediterranean Sea swelled under the protection of thick ice ...

The sea ice cap grows during the cold Arctic winters and shrinks when temperatures climb again, but over the last three decades, satellites have observed a 13% decline per decade in the summertime ...

At the end of the last global ice age, the deep-frozen Earth reached a built-in limit of climate change and thawed into a slushy planet. Results provide the first direct geochemical evidence of the ...

Results from a new study provide the first direct geochemical evidence of the "slushy" planet – otherwise known as the ...

Melting Arctic sea-ice may disrupt global climate, altering ocean currents and weather patterns, reveals new research.

New research suggests that ancient Mars, despite its icy conditions, once had rivers, lakes, and even a vast ...

Insulation provided by carbon dioxide ice above the martian polar caps could explain many of the Red Planet’s ancient river features.