"About 67 percent of Americans believe temperatures are rising, marking a slow but persistent rebound from the 2009 freefall in public opinion around climate change. Belief in warming now almost matches its pre-tumble level of four years ago, a new poll finds."

"A host of startup companies are pursuing new technologies that they claim will soon lead to large-scale commercialization of biofuels made from algae. But questions remain about the viability and environmental benefits of what its developers are calling 'green crude.'"

"In February 2011, a resident of a western Pennsylvania town noticed that her water was black and 'had a very strong metallic odor.'"

"Joe Waldman is saying goodbye to corn after yet another hot and dry summer convinced the Kansas farmer that rainfall won’t be there when he needs it anymore."

"In news that's sure to provide fresh fodder for Republican presidential nominee Mitt Romney ahead of his debate tonight with President Obama, an electric-car battery maker backed by a quarter-billion-dollar grant from the Obama administration filed today for bankruptcy protection."

Many environmentalists are embittered by the perception that President Obama has given up the fight on climate change. Few know that at a Martch 2009 off-record meeting, the leaders of most major U.S. environmental groups agreed with Obama political advisers to stop talking about climate change and reframe the message as one of clean energy.

"Keystone XL pipeline foes have tried petitioning the government, grabbing media attention and filing lawsuits. Now, with the southern leg of the pipeline under construction, they’re turning to civil disobedience -- and actress Daryl Hannah."

"The Environmental Protection Agency is re-examining more than 460 former lead factory sites across the USA for health hazards left by toxic fallout onto soil in nearby neighborhoods."

"LOS ANGELES — Federal regulators failed to pursue recalls after they found cadmium-tainted jewelry on store shelves, despite their vow to keep the toxic trinkets out of children's hands, an Associated Press investigation shows."

"FRISCO, Colo. -- Federal officials say that, after consultation with Indian tribes, they’ve clarified a  national policy addressing the right of Native Americans to possess or use eagle feathers for cultural and religious expression."