Researchers were stunned when they heard the audio from a recording device that spent a year in the icy waters off the east coast of Greenland. Have a listen..
Largest threat with this first U.S. autumn cold front will be wind gusts exceeding 60 miles per hour with possible tornadoes as storms push through the region.
On September 4, 2012 a NASA satellite captured an image of lava flowing down Anak Krakatau. The fresh lava has extended the shoreline of the volcanic island.
Sea ice in the Arctic in 2012 already appeared to be heading for a new record low. Then in early August, a long-lasting and powerful storm pushed through the Arctic.
If Antarctica's ice sheets continue to thin as the climate warms, stores of the potent greenhouse gas could be released to the atmosphere, researchers say.