A massive comet trail may have caused climate upheaval on Earth more than 12,000 years ago, sparking the Younger Dryas.

It's one of the most important natural weather systems. But the Gulf Stream has been getting weaker for much longer than we ...

Melting glaciers in Greenland are feeding ocean life by dragging deep-sea nutrients to the surface, boosting Arctic phytoplankton and altering ocean carbon dynamics, according to new NASA-led ...

Core samples collected near Greenland support the controversial theory a comet impact 12,800 years ago caused global ...

Greenland’s ice sheet, one of the largest in the world, is retreating at an alarming rate, creating profound impacts on both ...

A hidden lake in Harder Glacier Greenland burst through the surface of the ice sheet. The massive flood exposed major gaps in climate models.

What did scientists find deep in Antarctic ice? Clues from volcanic eruptions that may have cooled the planet 800 years ago.