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Energy

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http://allafrica.com

ATMOSPHERIC concentrations of carbon dioxide have broken the 400 parts per million level at several stations of the World Meteorological Organisation across the world, heightening the need for radical action to arrest emissions growth and limit clima

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http://www.edn.com, Bill Schweber

While looking for more batteries during a recent power failure, I came across some D-size alkaline cells in the back of a drawer, in their original package (see photo) with the price and store name sticker.

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http://www.popsci.com, By John Voelcker

Sometime in the next few weeks, the 100,000th plug-in electric car will be sold in the U.S. But they're still mostly a mystery to the average new-car buyer, and there are a few key principles that get shared over and over again.

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