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