"InsideClimate News reporter Lisa Song was threatened with arrest on Wednesday after she entered the command center for the cleanup operation in Mayflower, Ark., where a major oil pipeline spill occurred on Friday."

"The government on Thursday recommended the removal of four hydroelectric dams on the Klamath River in Oregon and California to aid native salmon runs and help resolve a decades-long struggle over allocation of scarce water resources."

"MIAMI -- Responding to criticism after Superstorm Sandy, the National Hurricane Center said Thursday it would change the way it warns people about tropical storms that morph into something else."

"Coal production in Kentucky last year reached its lowest level since 1965, while shedding more than 4,000 jobs, nearly all of them in Appalachian counties, according to a new state report."

"Metro Detroit’s poor and minority populations face greater health and environmental challenges than most communities because of their proximity to industrial pollution - an “environmental injustice” and “human rights abuse,” Sierra Club Detroit officials said today as they released a report on the state of Detroit’s environment."

"The increase is the result of the government last year lowering the threshold for lead poisoning."

"The Home Depot chain agreed to pay $8 million for selling tens of thousands of gallons of paint, varnishes, sealants and other liquid building materials that violated regional air quality rules, the South Coast Air Quality Management District announced Thursday, April 4."

"A 'rank' odor that has spread across parts of greater New Orleans may be linked to a leak from the 192,500-barrel-per-day Chalmette refinery, the U.S. Coast Guard investigating the smell said on Thursday."

President Obama's declared initiatives on environment and climate are going forth in an intense swirl of conflict in electoral and legislative politics. Money is involved.

"Global warming isn't just an issue for Democrats, according to a report released yesterday by George Mason and Yale universities. Sixty-two percent of self-identified Republicans and GOP-leaning independents said in a national survey that the United States should or probably should take action to address climate change despite uncertainties, the report says."

"MAYFLOWER, Ark. -- An ExxonMobil pipeline that ruptured and spilled thousands of barrels of oil in central Arkansas last week highlights the need for pipeline maintenance, inspections and safety standards, the state's attorney general said Wednesday."

Rumors that the conservative billionaire Koch brothers could be poised to buy the Tribune Company raise questions about how that might affect Tribune news outlets' coverage of environment and energy issues, in which the Kochs have a substantial stake.

"Crisscrossing Michigan are more than 3,100 miles of old wrought- and cast-iron natural-gas pipelines -- the type federal regulators consider the most at risk of corrosion, cracking and catastrophic rupturing. The state's two largest utilities have replaced less than 15% of these pipelines -- 542 miles -- in the past decade."

"Rumors of Scripps begone -- geophysicist Marcia McNutt, who stepped down as head of the U.S. Geological Survey (USGS) in February, is returning to Washington, D.C., as the new editor-in-chief of Science. McNutt will take over the editorship on 1 June from Bruce Alberts, who announced his retirement last year."

"Growing environmental objections to exporting coal from Washington state and Oregon have begun to endanger the coal industry’s hope to restore its flagging fortunes by shipping much more of the embattled fossil fuel to China and India."