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.
The ‘invasional meltdown’ theory says the establishment of one invasive species in a new environment makes it easier for other non-native species to invade.
By August 8, melting in Greenland was more than in the entire melting season of 2010, which previously held the record for greatest melting in one year.
Hurricane Isaac made landfall in southeast Louisiana, in Plaquemines Parish, near the mouth of the Mississippi River. Maximum sustained winds 80 miles per hour.