The Discovery of Global Warming
February 2005      [HOME]     List of illustrations     BACK

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).

The Esplanade near Parshant campground, May 2003, photos by S. Weart.
Copyright © 2003-2005 Spencer Weart & American Institute of Physics