Green building strategies are being embraced by a growing number of local and state governments. In some cases, the trend is being driven by a desire to reduce water and electrical use in areas where those critical resources are in limited supply or costly to import. Some elected officials also seem motivated, however, by frustration over the Bush administration's foot-dragging in response to scientific warnings about global warming, and are determined to take steps on their own to reduce greenhouse gas emissions. Cities and counties cannot regulate tailpipe emissions or, for the most part, coal-burning power plants. They can, however, regulate land use and building design, and that's where they are focusing.

The Salton Sea sits likes a time bomb in the desert, serving up a brew of bad smells, turgid waters and the potential to increase air pollution in an area where thousands of homes are planned. But under a proposal making its way through the Legislature, some of the sea's lurking hazards may be stopped. Instead, the Salton Sea may be shrunk to a third of its current 240,000 acres and revived as a recreational lake for sport fish and migrating birds. All it will take is billions of dollars and at least 75 years of maintenance.