"The U.S. Environmental Protection Agency will announce plans to propose new rules to significantly decrease emissions of smog-forming nitrogen oxide from diesel-powered heavy-duty trucks, an agency official said."

"With drought a constant consideration for New Mexico, state and federal officials are warning that decisions about water are growing more complicated and opportunities to tap untraditional sources should be considered."

"The U.S. Environmental Protection Agency is moving ahead with plans for a 2-foot-deep removal of lead- and arsenic-contaminated soil at the site of a northwestern Indiana public housing that’s been evacuated and demolished over health concerns."

"City testing of Chicago homes with water meters found nearly 1 in 5 sampled had brain-damaging lead in their tap water, but Mayor Rahm Emanuel's water commissioner acknowledged Thursday that the city continued installing new meters after learning about the alarming results in June."

"A federal jury on Wednesday ruled a global contractor tasked with keeping disaster clean-up workers safe instead endangered them – some fatally."

"A blanket of smog greeted residents of New Delhi on Monday as air quality deteriorated sharply overnight in India's capital, triggering warnings that even healthy people were at risk of health problems."

"Just before Hurricane Michael made landfall last month, a ferocious red tide that had scoured Florida’s Gulf Coast for a year, depositing countless dead sea turtles, dolphin and other marine life on beaches before spreading to the Atlantic coast, had finally started to wane."

"Earth’s protective ozone layer is finally healing from damage caused by aerosol sprays and coolants, a new United Nations report said."

"Minnesota regulators on Thursday granted key permits to the long-planned PolyMet copper-mining project that’s opposed by environmentalists who fear it could someday foul waters, including Lake Superior."

"A small, brownish weasel that spends much of its life in the water, hunting for fish and frogs, the American mink is a signal for the ecological health of where it lives. Right now, the mink is not doing very well along the Hudson River, largely due to decades of PCB pollution ... ."