Drought expands to cover nearly 63 percent of the Lower 48; wildfires consume two million acres.

Earth's oceans, forests and other ecosystems continue to soak up about half the carbon dioxide emitted into the atmosphere by human activities, even as those emissions have increased, according to...

A 2011 NOAA research paper that tied weaker South Asian summer monsoons to human activities has won the World Meteorological Organization’s Norbert Gerbier-MUMM International Award for 2013.

Worldwide, 2011 was the coolest year on record since 2008, yet temperatures remained above the 30 year average, according to the 2011 State of the Climate report released online today by NOAA.

The globe experienced its 12th warmest November since record keeping began in 1880.

November and the September-November autumn season were warmer than average across the contiguous U.S., according to scientists at NOAA’s National Climatic Data Center (NCDC) in Asheville, N.C....

An international team of scientists who monitor the rapid changes in the Earth’s northern polar region say that the Arctic is entering a new state - one with warmer air and water temperatures,...

A 'brown cloud' of pollution over the Indian Ocean resulting from human activities has led to stronger tropical cyclones in the Arabian Sea, according to an international team of scientists.

The 2011 Atlantic hurricane season officially ends Wednesday, having produced a total of 19 tropical storms of which seven became hurricanes, including three major hurricanes. This level of...

The globe experienced its eighth warmest October since record keeping began in 1880. Arctic sea ice extent was the second smallest extent on record for October at 23.5 percent below average....

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