Exploring Science At The End Of The Earth

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Year in Review: Science Stories of 2011

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In this photo released by the U.S. Marines and taken in December 2010, Lance Cpl. Dakota Hicks, from Laharpe, Ill., connects a radio battery to a portable solar panel communication system in Sangin District, in Afghanistan.The U.S. military is trying to wean itself off reliance on fossil fuels by employing solar energy and biofuels, among other measures. Gunnery Sgt. William Price Small/AP hide caption

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Gunnery Sgt. William Price Small/AP

U.S. Military Tests Out Green Tech In Afghanistan

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A group of harbor porpoises in San Francisco Bay, photographed from the Golden Gate Bridge. Harbor porpoises haven't been seen in the bay since the 1930s. Researchers believe World War II activity may have contributed to their disappearance. The Navy strung a seven-mile underwater net across the mouth of the bay to keep out enemy submarines. William Keener/Golden Gate Cetacean Research hide caption

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William Keener/Golden Gate Cetacean Research

60 Years After Leaving, Porpoises Again Play In SF Bay

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As Nuclear Plants Age, No Easy Energy Solutions

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Birders Fan Out to Count Feathered Friends

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Searching For A Ghost Bird

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Building Bridges From Plastic Shampoo Bottles

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At Year's End, Reflecting On Cycles In Modern Life

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Air travel contributes only 2 to 4 percent of carbon dioxide emissions worldwide. A new ruling says airlines flying into and out of European airports will have to pay a price for the carbon dioxide they emit from burning jet fuel. Above, a plane takes off from the Geneva airport last year. Fabrice Coffrini/AFP/Getty Images hide caption

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Fabrice Coffrini/AFP/Getty Images

Turbulence As EU Court OKs Fee On Plane Emissions

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Treating Stress, Speech Disorders With Music

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In Brazil, Oil Boom Brings Environmental Worries

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EPA To Unveil Stricter Rules For Power Plants

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