ABSTRACT
In April 2001, scientists at the National Oceanic and Atmospheric Administration laboratory in Boulder, Colorado, reported that a huge dust storm from northern China had reached the United States, “blanketing areas from Canada to Arizona with a layer of dust.” People living in the foothills of the Rockies could not even see the mountains. Few Americans were aware that the dust on their cars and the haze hanging over the western United States was, in fact, soil from China.1
