"An eerie, thick fog settled over Nebraska and Iowa on Tuesday."

"A pair of Democratic lawmakers are calling on the Interior Department watchdog to look into ethical concerns involving a number of key agency officials."

"President Trump's deregulatory boss is now seated on one of the most powerful courts in the nation, where she'll have lifetime tenure to influence environmental policy and other issues."

"The District of Columbia's top lawyer is preparing for a potential courtroom fight against one of the biggest oil companies in the world."

"Winter storms have covered the Rocky Mountains with snow from Wyoming to northern New Mexico, leaving a bounty of runoff that should boost the levels of the Colorado River’s depleted reservoirs this spring and summer."

"Facing billions of dollars in cleanup costs, the Pentagon is pushing the Trump administration to adopt a weaker standard for groundwater pollution caused by chemicals that have commonly been used at military bases and that contaminate drinking water consumed by millions of Americans."

"If all goes as planned, a Massachusetts biotechnology company will soon begin importing salmon eggs from a Canadian hatchery to its plant in Indiana, where they'll grow into the first genetically modified salmon ever produced in the United States."

"Democratic candidate says other issues matter, but America cannot afford to have another leader who does not have climate change as their top priority".

"Some Minnesota cities are grappling with how to reduce the amount of chloride being released from their wastewater treatment plants into lakes and streams, threatening aquatic life."

"The EPA’s yearslong, tenuous effort to ease air pollution limits on trucks with rebuilt engines can be traced back to a day early in Scott Pruitt’s tenure as administrator."