"Prime Minister Stephen Harper, in an effort to win U.S. backing for the Keystone XL pipeline, has sent a letter to President Barack Obama proposing joint action to reduce greenhouse gas emissions in the oil and gas sector"

"In the 1980s, it was South Africa. In the 1990s, it was tobacco. Now fossil fuels have become the focus of those who would change the world through the power of investing."

"The eight-state commission that sets water quality standards for the Ohio River wants a two-year delay on enforcement of a more stringent mercury standard while it considers relaxing those rules."

"Paul Bailey made the White House pitch on July 31. Flanked by six colleagues from the American Coalition for Clean Coal Electricity, the coal industry’s most public voice, Bailey pressed the case for 'achievable' greenhouse gas emissions standards for coal-fired power plants."

"The U.S. 9th Circuit Court of Appeals deals a blow to a years-long effort by Drakes Bay Oyster Co. to extend its lease in Point Reyes National Seashore."

"Scientists used to be well represented among the nearly half of Americans who voted Republican. But that's changed over the years, and one poll found that just 6 percent of scientists call themselves part of the GOP now."

"Confronted with images of corpses floating in the blackened floodwaters or baking in the sun on abandoned highways, there aren't too many people left who see what happened following Hurricane Katrina as a purely 'natural' disaster. The dominant narratives that have emerged, in the four years since the storm, are of a gross human tragedy, compounded by social inequities and government ineptitude—a crisis subsequently exploited in every way possible for political and financial gain."

"WASHINGTON, DC -- Environmental advocates delivered a report on the climate effects of the Keystone XL tar sands pipeline to President Barack Obama today, with the intention of giving the President all the information he needs to reject the pipeline."

"Federal authorities are struggling to explain why 600 people in 22 states have fallen ill from a foodborne parasite rarely seen in the United States. But some officials are ready to finger one culprit that has hindered their investigation: the sequester."

"The White House is expected to fill the EPA slot left vacant by Gina McCarthy's promotion by naming Janet McCabe, a deputy who will be tasked with navigating the legal hurdles that lie ahead."

"NEW ORLEANS -- Flying over southeast Louisiana, it's easy to see human fingerprints on what's left of the wetlands below."

"Wilma Subra, a diminutive grandmother, has long challenged the corporate polluters in one of the nation's most toxic regions."

"Tesla outsells Porsche and other luxury models in June with the Model S. Even on a year-to-date basis, Tesla outsells Porsche, Lincoln, Volvo, Jaguar, and Land Rover."

"Maryland officials pulled back a proposed regulation Monday aimed at reducing farm runoff polluting the Chesapeake Bay after chicken growers warned it could cripple the state's lucrative poultry industry if imposed now."

"JEFFERSON CITY, Mo. -- An environmental group is heading to court in another attempt to overturn the way Missouri officials have implemented a 2008 ballot initiative about renewable energy."