05/19/2013 09:27 am ET

By Man Or Nature, Places That Will Never Be The Same

If you had any doubts that we're living in a new age called the Anthropocene -- the term geologists have begun to use to describe our era, as defined by the impact humans are leaving on the planet -- then a look at the hundreds of cavernous open-pit mining operations scattered across the Earth's surface ought to be convincing.

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