Global Warming Photos

Over several years, melt water flowing off the Greenland ice sheet carved this 60-foot deep canyon (note people standing at the right for scale). In July 2012, nearly the entire surface of Greenland melted into slush in a matter of days, an unprecedented event in the satellite record. (Credit: Ian Joughin, Univ. of Washington)
Meltwater flowing off the Greenland ice sheet carved this 60-foot deep canyon in just a few years. Note the people at the right for scale. In July 2012, nearly the entire surface of Greenland melted to slush in just a matter of days, an unprecedented event in the satellite record. Greenland’s accelerating melt, now at about 367 billion tons of ice loss per year, accounts for about 25 percent of recent sea level rise. (Image credit: Ian Joughin)
All 12 acres of Teller Lake No. 5, in Boulder County, Colorado, went dry during the summer of 2012, leaving scores of dead fish in the dust. Sustained, widespread drought in the United States in 2012 may have cost as much as $150 billion to the economy. (Image credit: Carlye Calvin)
All 12 acres of Teller Lake No. 5 in Colorado went dry during the summer of 2012, leaving scores of dead fish in the dust. Sustained, widespread drought in the United States in 2012, combined with unprecedented heat, may have cost as much as $150 billion to the economy. (Image credit: Carlye Calvin)
An emergency worker looks on near a local hospital in the Russian city of Voronezh, July 29, 2010. Drought and a record heatwave led to hundreds of forest fires in western Russia in late 2012, causing about 56,000 deaths. (Image credit)
An emergency worker walks near a hospital in the Russian city of Voronezh, July 29, 2010. Drought and a record heatwave caused hundreds of forest fires in western Russia in late 2010 and led to about 56,000 deaths. (Image credit)