This image, combining data from two instruments aboard NASA's Mars Global Surveyor, depicts an orbital view of the north polar region of Mars. The ice-rich polar cap (the quasi-circular white area at ...

Melting glaciers and ice sheets are raising sea levels while the Arctic is poised to log one of its worst winters on record.

NASA released data on Monday indicating that the polar ice cap around the North Pole shrank to near record-low levels last week following an arctic heat wave. The ice began to melt in earnest as ...