"A swarm of new Clean Power Plan backers arrived on the legal scene last week, with filings rolling in from big technology companies, government officials and a couple of oddballs."

"Industry groups are challenging President Obama’s rule to protect workers from exposure to harmful silica dust."

"Climate change poses a serious danger to public health – worse than polio in some respects – and will strike especially hard at pregnant women, children, low-income people and communities of color, an authoritative US government report warned on Monday."

"To boost its supply of organic foods, Costco is trying something new: It’s working with farmers to help them buy land and equipment as it struggles to keep pace with customer demand."

"This summer, some yellow-fever mosquitoes carrying the Zika virus are expected to arrive along the Gulf Coast and elsewhere in the continental United States. Health officials are urging people to use insect repellents with DEET to avoid being bitten. The mounting evidence that the virus is strongly linked with birth defects makes this a priority for pregnant women. But is it safe to use repellents containing DEET with a baby on the way?"

"A group of religious, environmental, civil rights and other interest groups is pushing Congress to allocate hundreds of millions of dollars for a United Nations climate change fund."

"A worsening financial crisis for the nation’s biggest coal companies is sparking concerns that U.S. taxpayers could be stuck with hundreds of millions, if not billions, of dollars in cleanup costs across a landscape of shuttered mines stretching from Appalachia to the northern Plains."

"After several years of study, the U.S. Food and Drug Administration today advised parents to stop feeding their infants so much rice cereal, warning that the latest research now suggests that arsenic concentrations in the grain can interfere with cognitive development."

"Federal biologists on Thursday confirmed the presence of a lethal fungus known as white-nose syndrome in Washington, the first occurrence in western North America of the disease that has killed roughly 7 million bats."

"U.S. health regulators are facing a lawsuit from a coalition of environmental organizations seeking to overturn the government's landmark approval of a type of genetically engineered salmon to be farmed for human consumption."