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Turning Black Coal Green
Turning Black Coal GreenKevin HandCoal, the 19th century's fuel of choice, is still going strong in the 21st. The U.S. is by far the world´s biggest source of the fossil fuel, mining 1.1 billion tons...
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Of Kernels and Cobs
The key to cellulosic biofuelsiStockphotoWe all thought biofuels we're going to be our eco-savior (what could be greener than running our cars on renewable corn, soy, or sugarcane?) That is, until it...
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