"The Arizona Supreme Court has greenlighted a lawsuit that the Hopi Tribe brought against the city of Flagstaff, Ariz. for selling wastewater to a local ski resort to make fake snow.

"Governor Christie declined to sign a bill that would have required public notification whenever sewer-outfall pipes dump raw sewage into local rivers and bays, legislation that had received overwhelming support by both parties in the state legislature."

"CHARLESTON, W.Va. -- Federal and state investigators learned Tuesday that an additional chemical that wasn't previously identified was in the tank that leaked Jan. 9 at the Freedom Industries tank farm, just upstream from West Virginia American Water's regional drinking water intake."

"West Virginia's governor on Monday proposed legislation to regulate above-ground storage tanks, a move that comes after a spill of coal-processing chemicals shut off drinking water to about 300,000 people."

"CHARLESTON, W.Va. -- Gov. Earl Ray Tomblin on Monday told 300,000 state residents that they should make their own decisions about using water from West Virginia American Water's Elk River plant in the wake of this month's leak of the chemical Crude MCHM."

"There are more than 80,000 chemicals in the United States catalogued by government regulators, and the health risks of most of them are unknown."

"CHARLESTON, W.Va. -- Freedom Industries, the company that fouled thousands of West Virginians' water with a chemical leak into the Elk River last week, filed for Chapter 11 bankruptcy Friday."

"California Governor Jerry Brown declared a drought emergency on Friday, a move that will allow the parched state to seek federal aid as it grapples with what could turn out to be the driest year in recorded state history for many areas."

"Gaps forming in seasonal Arctic sea ice may be creating a toxic conveyor belt, drawing mercury from higher altitudes to rain down on the ice, snow and tundra, according to a new study."