Reasons to be Cheerful explains how "gravity batteries" are giving former mines a second life—while offering an economic and ...

China has tremendous power over the rare earths market. The country has the biggest mines, producing 270,000 metric tons (297 ...

The U.S. Forest Service is providing notice that it plans to reissue a final environmental review and draft decision on a contested transfer of land in Arizona that would clear the way for a massive ...

From dormant volcanoes and salt pans to urban forests and library gardens, these are the places we go for peace and quiet.

One hundred sixty-four years ago this month, a prospecting party worked its way north along the Arkansas River, testing gulches as they went. Near the upper end of the valley, ...

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