Snowfall predictions days in advance are suspect -- here's why snow is so difficult to forecast.
The Southern Ocean's notoriously strong gales are growing stronger, and that's foreboding news for coastlines everywhere.
Arctic sea ice decline has doubled the chances of an extreme cold winter over Europe and Asia.
The polar vortex spurred a spike in CO2 emissions in 2013 as people cranked up their heat last winter.
Discovery of a semi-lifeless glacier in southeastern Iceland creates a new zombie class of frozen rivers of water.
A new climate report from the Pentagon, tornado trends, earthquakes and more in this week's top climate news.
The frost-free season is growing longer across the U.S. overall. Check the trend in your city.
Expansion of Antarctic sea ice heralds ocean changes that could trap heat and accelerate ice sheet melting.
For the third year in a row, Antarctic sea ice has hit a record maximum winter extent.
A lobe of the ailing Aral Sea, once the fourth largest lake in the world, has dried up for the first time.
Sediment flowing off Greenland's ice sheet could hold clues about current and future sea level rise.
The sea ice that rings Antarctica is headed for another record winter maximum.
Take an interactive look at extreme weather events in 2013 and the role global warming did (or didn't) play.
A new European Space Agency animation shows recent ice loss in Antarctic in new detail.
Arctic sea ice is set to reach the sixth lowest extent on record at the end of the summer melt season.
2014's Arctic sea ice minimum isn’t going to be as low as the record set in 2012, but it will be well below the 1981-2010 average.
September marks the end of winter when the sea ice that surrounds Antarctica swells to its maximum extent.
The spectacular 2002 collapse of Antarctica's Larsen B ice shelf was caused by surface melting.
Nearly half of the carbon that's eroding from melting Arctic permafrost is ending up in the atmosphere.
The most comprehensive set of precipitation data collected by NASA is now available to the public.