A copper refinery transformed its waste stream into an unlikely renewable energy goldmine, turning forgotten byproducts into the very panels that now power its operations.
A Depression-era soil fix that blanketed millions of Southern acres became an environmental bogeyman—but the numbers tell a very different story than the legend.
Opportunity self-portraits from January 2014, left, and March 2014 show how wind removed much of the dust from the rover’s solar panels. These images postdate the first dust-devil photograph and do ...
A solar telescope in New Mexico is being torn down, and the reason is a pool of liquid mercury hidden inside it. The mercury was the clever trick that made the telescope work. It is now the thing that ...
Kiruna’s church went for a walk in August 2025, at half a kilometre an hour, on 224 wheels. The trip took two days and included a daily stop for fika, the Swedish afternoon coffee break, because some ...
Placing concrete in a block at the mid-section of the dam, an eight-cubic-yard bucket handled by an overhead cableway. Bureau of Reclamation photograph via the US National Archives (NARA 293921), ...
A United States Geological Survey bench mark on the summit of Copper Mountain, Nevada, one of the more than a million survey marks set into the ground across the country. Photograph by Famartin, ...
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