Dan Frosch writes about the U.S. economy for The Wall Street Journal, with a focus on poverty and inequality.

The Gold King Mine spill leaked copper ... giving the dirty mine water a more direct route to the Animas River. Metals in low enough doses don't have much of an effect on the ecosystem of river ...

The spill happened on Feb. 18 when a tailings dam that holds acidic waste from a copper mine in the north of the country collapsed, according to investigators from the Engineering Institution of ...