"Wyoming, famous for its crisp mountain air and breathtaking, far-as-the-eye-can-see vistas, is looking a little bit like smoggy Los Angeles these days because of a boom in natural gas drilling."

"The federal government has agreed to step up its efforts to force freighters sailing on the Great Lakes to begin treating their biologically contaminated ballast water discharges like any other industrial pollutant."

The boom in cellulosic ethanol that was predicted four years ago never happened. Or hasn't happened yet. The idea of making ethanol from all manner of plant material other than corn still promises major net environmental benefits -- unlike corn ethanol, which doesn't do much for the environment. But a lot depends on oil prices, electric car sales, financing, and the economies of scale.

"The federal rule protecting the nation's last remaining stretches of roadless wilderness will apply now to the largest and grandest of the national forests under a court ruling in Alaska, which threw out the exemption granted to the Tongass National Forest."

"Redondo Beach's King Harbor is inundated with dead fish. Experts believe the sardines sought safe harbor from a storm, but consumed the oxygen in their small refuge."

"Behind the feud between Greenpeace and Facebook over renewable energy."