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EarthDarker days during Arctic summer
Satellite observations indicate that Arctic regions reflected less sunlight into space in the summer of 2006 than in other recent years, a change that may exacerbate the warming of Earth's climate.
By Sid Perkins -
EarthDust Bowl affected midwestern climate
During the Dust Bowl of the 1930s, immense clouds of airborne soil blocked so much sunlight that much of the Great Plains region was significantly cooler than normal during summer months.
By Sid Perkins -
EarthAge and gender affect soot’s toxic impact
Except in young females, small blood vessels in rodents lost the ability to precisely regulate blood flow after exposure to an oily constituent of diesel soot.