A copper sink needs routine cleaning just like any other sink, and you shouldn't let a fear of ruining its finish get in the way of the chore. We asked two copper care experts the best way to keep ...

A copper sink has a unique beauty, but there is one cleaning method that is best for keeping its finish. Here's the best way and how to maintain it.

Allanore’s lab has shown that electrolysis can also extract nickel, cobalt, and manganese—three other minerals crucial for lithium-ion batteries. But copper is king.