Extremely low sea ice levels in the Arctic and Antarctica signal a "new normal" that may accelerate global warming and ...

Beneath the surface of the Southern Ocean, vast volumes of cold, dense water plunge off the Antarctic continental shelf, cascading down underwater cliffs to the ocean floor thousands of meters below.

At the Arctic Mid-Ocean Ridge off the Norwegian coast, molten rock rises from deep within the Earth between spreading ...

Geologists have uncovered a long-lost continental fragment buried beneath the thick ice of Greenland, a discovery that offers ...