Scirus is the best search engine we've found for scientific information.
NIST Chemistry Webbook has online IR and MS spectra and chemical properties
for thousands of chemicals.
Webelements is a fantastic online periodic table.
Analytical Chemistry/Mass Spectrometry Links:
I-mass.com has the latest information on mass spectrometry and links
to many international MS journals.
The American Society for Mass Spectrometry is the largest MS organization
in the US and publishes JASMS. 
Spectroscopy online has some of the latest in the field.
Pittcon is the largest analytical chemistry conference in the world.
Another good MS page with recent news and links to many companies.
Atmospheric/Environmental Chemistry/Aerosol Links:
The American Association for Aerosol Research publishes Aerosol Science
and Technology.
The American Geophysical Union Publishes the Journal of Geophysical Research
.
EPA information on particulate matter (PM).
The EPA established 8 "Supersites" for PM research; we have participated in Houston and New York:
Atlanta Fresno Houston New York Los Angeles Pittsburgh Baltimore St. Louis
Community Links:
The Herald Journal is Logan's town newspaper.
Logan is located in the beautiful Cache Valley.
An hour west of Logan, the Park Service runs the Golden Spike National
Historic Site, where the transcontinental railroad was completed.
The US Forest Service oversees the Wasatch-Cache National Forest just
minutes from Logan.
