"As Mars joins the growing group of multinational food companies pledging to phase out artificial food coloring, its use remains widespread. Here’s why it matters."

"A new scientific study [documents] that organic food can substantially lower pesticide exposure in children from low-income families in both urban and rural areas."

"Citing last week's decision by the U.S. Supreme Court, Wisconsin Gov. Scott Walker on Monday ordered state agencies not to do any work to prepare for federal climate change regulations that would require Wisconsin utilities to cut carbon emissions from power plants."

"DOE issued a proposed rule [Friday]afternoon for light bulbs that would likely lead to the phaseout of compact fluorescent lights (CFLs), analysts say."

"Most science teachers in the United States spend some time on climate change in their courses, but their insufficient grasp of the science as well as political factors “may hinder effective teaching,” according to a nationwide survey of the profession.

"White House officials began sifting through their pool of potential nominees for the newly vacant seat on the nation’s highest court Sunday, girding for battle with Republicans who are insisting that President Obama leave the choice of a new justice to his successor."

"Lawmakers grilled the head of the Environmental Protection Agency (EPA) over officials' reportedly illegal use of "covert propaganda" to promote a controversial water rule."

Gasoline refiners would blend ethanol into fuel even if the Congressionally-passed law and EPA rules didn't require it. The reason: it's needed to boost the octane rating that makes cars perform properly.

"It took Sen. Ted Cruz to finally persuade me to answer a riddle that's bothered me for years. Suppose somebody yanked away the law that currently props up the nation's ethanol industry, as Cruz has proposed. What would actually happen?

"An environmental group is formally questioning Peabody Energy's ability to fully bond its coal mines in Wyoming and elsewhere in the Rocky Mountain region, saying the St. Louis-based company has insufficient funding to qualify for self-bonding."

"With the FBI tightening its ring around them, the last four holdouts in the armed takeover of a national wildlife refuge in Oregon surrendered Thursday, ending a 41-day standoff that left one man dead and exposed simmering anger over the government's control of vast expanses of Western land."