Quantifying Earth's copper: Study puts numbers on nonrenewabilility

Unlike forests, fisheries and other resources that can be renewed relatively rapidly through natural processes, mineral deposits form so slowly that they're classified as nonrenewable. But just how non-renewable are they, and is it possible to put a number on their nonrenewability?

If you want to include this story in your blog, copy and paste this formatted text:

<p><a href="http://www.physorg.com/news122828985.html">Quantifying Earth's copper: Study puts numbers on nonrenewabilility</a></p> <p>Unlike forests, fisheries and other resources that can be renewed relatively rapidly through natural processes, mineral deposits form so slowly that they're classified as nonrenewable. But just how non-renewable are they, and is it possible to put a number on their nonrenewability?</p>