Kentucky faces challenge of sustainable development (5)
09:31, February 03, 2010

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Researcher Tom Robl briefs the current program of the environmental and coal technologies group of the Center of Applied Energy Research (CAER) at the University of Kentucky in Lexington, Kentucky, the United States, Feb. 1, 2010. Kentucky, one of the leading coal producing states in the United States, is facing the challenge of sustainable development brought about by its coal industry. (Xinhua/Liu Xin)
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