The City of Sacramento is trying to make it tougher for copper thieves to sell stolen wire. All wire installed in city boxes from now on will be stamped with the words, “City of Sacramento.” Steve ...

The rocks of the Keweenaw Peninsula are ancient: More than one billion years old, containing loads of native copper deposits. Mining them created a legacy seen throughout the region. The nation's ...

Scientists are working toward a simple, practical way to remediate mine waste laced with copper and other toxic elements. And they are shedding light on the inner workings of the plants and bacteria ...