American Electric Power's natural gas-burning plant in Dresden, Ohio, is one of the energy company's new investments in alternatives to coal-burning plants. Michael Williamson/The Washington Post/Getty Images hide caption

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Natural Gas Dethrones King Coal As Power Companies Look To Future

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Wild bees, such as this Andrena bee visiting highbush blueberry flowers, play a key role in boosting crop yields. Left photo by Rufus Isaac/AAAS; Right photo courtesy of Daniel M.N. Turner hide caption

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Wild Bees Are Good For Crops, But Crops Are Bad For Bees

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After The Spill: The Environment And Economy Of The Gulf

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Scientists Discover 'Ghost Continent' Under Layers Of Rock In Indian Ocean

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Increased Humidity From Climate Change Could Make It Harder To Tolerate Summers

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Civil Trial Against BP Seeks To Place Blame For Gulf Oil Spill

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Trial Against BP To Begin Over 2010 Rig Explosion

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The Boston Tea Party museum sits right on the edge of the harbor. With rising sea levels and the increasing threat of strong storms, buildings like these are at particular risk of flooding. Christopher Joyce/NPR hide caption

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Boston Grapples With The Threat Of Storms And Rising Water

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How Wood Smoke is Dirtying Alaska's Air

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The Racetrack area in Death Valley National Park, which boasts one of the darkest night skies in the U.S. Dan Duriscoe/National Park Service hide caption

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Carnegie Lake, Australia, 1999 Carnegie Lake in Western Australia fills with water only during periods of significant rainfall. In dry years, it is reduced to a muddy marsh. Flooded areas appear dark blue or black, vegetation appears in shades of dark and light green, and sands, soils and minerals appear in a variety of colors. NASA hide caption

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WBT radio's bomb shelter in Charlotte, N.C., part of a government-funded emergency communications network, as it looked in 1963. Courtesy of Jerry Dowd hide caption

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Cold War Bunker Network Repurposed For 21st Century Threats

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