Add Yahoo as a preferred source to see more of our stories on Google. Copper and brass are easily confused as they look so similar, but it's their color that distinguishes them. Copper has distinct ...

Researchers ditched many of their high-tech tools and turned to large stones, fire and some old-fashioned elbow grease to recreate techniques used by Native American coppersmiths who lived more than ...

For years, copper seemed like the perfect brake pad material — until researchers uncovered a hidden problem with far-reaching ...