DRAGOON, Ariz.—In the boulder-strewn desert east of Tucson, miners are using sulfuric acid and bacteria to bring online the first new U.S. copper production in more than a decade. The metal is coming ...

Cities rise on steel, copper, cement, and energy. Roads stretch because stone was extracted. Apartments exist because minerals were processed. Property and mining are not separate stories. They are ...

Still Bright hopes its chemical process could help replace polluting copper smelters. Demand for copper is surging, as is pollution from its dirty production processes. The founders of one startup, ...