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|The Discovery of Global Warming February 2005|
|The vanishing Grand Canyon. Hazy days like this have become increasingly
common in recent decades. Sometimes part of the dust comes from as far away
as China. Inset: a nearby view on a better day (even though cloudy: in the
upper picture the sky is clear of clouds, but not of haze).
The Esplanade near Parshant campground, May 2003, photos
by S. Weart.