A little chilly for camping: Ice-penetrating radar revealed a mega-canyon below the Greenland ice sheet, extending for more than 460 miles. Courtesy of J. Bamber/University of Bristol hide caption

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Another 'Grand Canyon' Discovered Beneath Greenland's Ice
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Rock islands dot the ocean in Palau, Micronesia. The waters of the tropical Pacific Ocean have been relatively cool for the last 15 years. Christopher Ward/Corbis hide caption

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A Cooler Pacific May Be Behind Recent Pause In Global Warming
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Kevin Trenberth is a distinguished senior scientist at the National Center for Atmospheric Research. Rich Crowder/Corbis hide caption

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The 'Consensus' View: Kevin Trenberth's Take On Climate Change
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Judith Curry with her dogs, Rosie (left) and Bruno, in the mountains near Lake Tahoe. The climatologist focuses on the uncertainties of climate change far more than on the consensus of climate scientists. Richard Harris/NPR hide caption

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'Uncertain' Science: Judith Curry's Take On Climate Change
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Lake Eyre in South Australia is normally a dry salt pan and rarely fills with water. But it did after massive rains two years ago, and is seen here on May 20, 2011. Theo Allofs/Corbis hide caption

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How Extreme Australian Rains Made Global Sea Levels Drop
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Plants accumulate carbon in the spring and summer, and they release it back into the atmosphere in the fall in winter. And a change in the landscape of the Arctic tundra, seen here, means that shrubs hold onto snow better, which keeps the organic-rich soils warmer and more likely to release carbon dioxide that's stored there. Jean-Erick Pasquier/Gamma-Rapho via Getty Images hide caption

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Swinging CO2 Levels Show The Earth Is 'Breathing' More Deeply
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Changes to the acidity of the Earth's ancient oceans affected the coral reefs more than 50 million years ago. And researchers are using that information to try to predict how the planet might fare in our rapidly changing climate. Above, the Wheeler Reef section of the Great Barrier Reef. Auscape/UIG via Getty Images hide caption

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Our Once And Future Oceans: Taking Lessons From Earth's Past
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Roughnecks build a drilling rig at the MEG Energy site near Fort McMurray, Alberta, Canada. In addition to large, open-pit mining operations, tar sands oil can be extracted from the ground by pumping down high-pressure steam. Michael S. Williamson/The Washington Post/Getty Images hide caption

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Canadian Regulators Investigate Mysterious Tar Sands Spills
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Golden lion tamarins are one species that are largely monogamous. Felipe Dana/AP hide caption

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For Some Mammals It's One Love, But Reasons Still Unclear
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Biologists normally look for the hellbender slamander, which is known by the nickname "snot otter," under rocks in streams. But now there's a gentler way: They can take water samples and look for traces of the animals' DNA. Robert J. Erwin/Science Source hide caption

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What's Swimming In The River? Just Look For DNA
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Scientists could use recordings of wildlife to monitor the movements of invasive species like the European starling. Liz Leyden/iStockphoto.com hide caption

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Eavesdropping On Nature Gives Clues To Biodiversity
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The "Giant Tabular Iceberg" floats in Antarctica's Ross Sea in December 2011. Under a proposed new international agreement, large sections of the oceans around Antarctica would become protected as a marine preserve. Camille Seaman/Barcroft Media/Landov hide caption

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Sweeping Parts Of Southern Seas Could Become A Nature Preserve
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Film Rankles Environmentalists By Advocating Nuclear Power
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Jay Keasling (left), speaking with Rajit Sapar at the Joint BioEnergy Institute, is pioneering a technique to develop diesel fuel from yeast. Courtesy of Lawrence Berkeley National Laboratory hide caption

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Put Down Oil Drill, Pick Up The Test Tube: Making Fuel From Yeast
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Global Thermostat's pilot plant in Menlo Park, Calif., pulls carbon dioxide from the surrounding air. The next challenge is to find uses for the captured gas. Courtesy of Global Thermostat hide caption

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This Climate Fix Might Be Decades Ahead Of Its Time
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