"The Sierra Club launched a system Tuesday to send text message alerts when smog pollution is at a high level in certain areas."

"A drill ship at the heart of Shell's hunt for Arctic oil flunked a Coast Guard inspection last month when a piece of anti-pollution gear that already cost its owner millions in fines failed again."

"Bank of America is cutting off its financing for coal extraction projects, the company announced at its shareholder meeting Wednesday."

"A train carrying highly volatile crude oil derailed and erupted into flames on Wednesday morning, forcing the evacuation of a small town in North Dakota, according to local and federal officials."

"Officials at Boston Logan International Airport have announced a broad multimillion-dollar plan to make the airport, which is almost surrounded by water, more environmentally sustainable and resilient in the face of climate change."

"The Environmental Protection Agency has wrapped up its review of the world's most widely used herbicide and plans to release a much-anticipated preliminary risk assessment no later than July, the regulator's chief pesticide regulator told Reuters."

"A Delaware judge is considering Duke Energy's request for a six-month halt of a shareholder lawsuit prompted by a massive coal ash spill in North Carolina while the company tries to resolve related lawsuits and finalize a $102 million settlement of a federal criminal investigation."

A coalition of Native Americans, landowners and grass-roots groups seek to block construction of the Keystone XL pipeline in South Dakota and elsewhere.

"The United States must redirect spending from wasteful solar power tax credits and prepare the electricity grid for large-scale solar energy use if the industry is to play a significant role in lowering carbon emissions, a report led by MIT researchers said on Tuesday."

"Amid one the West’s worst droughts in centuries, more than 5,600 wildfires scorched more than 600,000 acres last year in California alone. It could happen again."