ESA image: Las Vegas and Lake Mead

This image from the Landsat-8 satellite acquired on 23 September 2014 brings us over the southwest United States: Nevada and Arizona.

Ukraine moves giant new safety dome over Chernobyl

Ukraine on Tuesday unveiled the world's largest moveable metal structure over the Chernobyl nuclear power plant's doomed fourth reactor to ensure the safety of Europeans for future generations.

Coal ash ponds found to leak toxic materials

A Duke University study of coal ash ponds near 21 power plants in five Southeastern U.S. states has found evidence that nearby surface waters and groundwater are consistently and lastingly contaminated by the unlined ponds.

Iceland turns carbon dioxide to rock for cleaner air

In the heart of Iceland's volcano country, 21st-century alchemists are transforming carbon dioxide into rock for eternity, cleaning the air of harmful emissions that cause global warming.

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