SEATTLE — When a driver hits the brakes, friction releases copper shavings that fall onto the road and are eventually washed into rivers, where environmentalists say the metal could pose a hazard to ...

For decades, copper has quietly done some of the hardest work in heavy-duty truck braking systems. It stabilized friction. It pulled heat out of the pad. It reinforced the friction matrix. It helped ...

One thing you're sure to find in a dedicated motorist's garage is grease because, at its heart, a car is a sophisticated collection of metal components. Many of which, of course, work in close contact ...