Southwest (AZ NM OK TX)

"Oklahoma’s oil and gas regulator plans to shut some disposal wells and reduce the volume of others as its initial response to Sunday’s earthquake near the oil hub of Cushing."

"An earthquake with a preliminary magnitude of 5.0 struck near Cushing, Oklahoma, on Sunday damaging several buildings and prompting evacuations, but there were no reports of injuries, authorities said."

"There’s a war brewing over the future of rooftop solar, and Arizona is at ground zero."

"The Manchester community is one of several on Houston's east side that environmental activists say is concerned about chemical exposure. Texas Environmental Justice Advocacy Services, or Tejas, has teamed up with the Center for Science and Democracy’s Union of Concerned Scientists to publish data they say supports their stance that living in communities near chemical plants and refineries can lead to deadly illnesses."

"How an esoteric piece of farm equipment created America’s breadbasket—and threatens to destroy it."

"State regulators last year documented 276 new cases of groundwater contamination across Texas, a slight increase compared to 2014 but far fewer than in years past."

"The U.S. Environmental Protection Agency will order wastewater disposal wells shut near the epicenter of a 5.6 magnitude earthquake that struck on Saturday around Pawnee, Oklahoma, local media reported on Tuesday."