EPA Updating Science for SO2
After recently issuing highly controversial updates for two of the main criteria air pollutants — fine particulates and ozone — EPA is in the midst of its review of two others.
The National Trails System is in its hiking prime, celebrating its 40th birthday on Oct. 2, 2008. The network of 26 trails traverses about 60,000 miles throughout the country.

In this issue: Bringing Rachel Carson to the Silver Screen; The Environment Plays in the Prez Campaign; The Roots of Conservatives' E-view; Click the title for a hotlinked table of contents.
"Smart grids" are packages of technologies and services that allow two-way communication between homes and utilities, as well as between various parts of regional power distribution systems.