"Car shoppers have until Monday night to take advantage of lucrative Cash for Clunkers rebates from the government, and the Obama administration is hoping for a smooth ending to a program that has spurred auto sales but created headaches for many auto dealers."

"In a long-awaited move designed to protect people from cancer, California officials on Thursday proposed a new health goal for chromium 6 in drinking water that is thousands of times lower than the amount contaminating some water supplies."

"Alaska's marine waters -- source of 60 percent of the United States' seafood harvest -- show surprising impact as greenhouse emissions undermine the base of the food web."

"July was the hottest the world's oceans have been in almost 130 years of record-keeping. ... Meteorologists said there's a combination of forces at work this year: A natural El Nino system just getting started on top of worsening man-made global warming, and a dash of random weather variations. The resulting ocean heat is already harming threatened coral reefs. It could also hasten the melting of Arctic sea ice and help hurricanes strengthen."

"News broke on Friday that the American Petroleum Institute is urging member companies to recruit their employees, retirees, vendors, and contractors to attend 'Energy Citizen' events across the country over the August congressional recess. Today, we have some updates to the story."

In the Yaak Valley of Montana, environmentalists have been talking to loggers, snowmobilers and other longtime opponents of wilderness protection about the future of public lands. Rick Bass writes of his involvement in a cooperative effort that could lead to the first wilderness-area designation in the state in a quarter-century.