Flagstaff, AZ – Earth Notes: Dust and Snow
For those living in the American southwest, dust is as much a part of the environment as dryness and sunshine. Tiny particles seem to get into everything.
While dust can be annoying, scientists believe it plays a vital role in the region's ecology. It appears to provide essential minerals and chemical compounds to high mountain ecosystems, just as sea faring salmon bring ocean nutrients high up into freshwater streams.