Bloomberg's Best Photos 2012: The World at Work

By Bloomberg Photos - 2012-12-13T20:13:24Z

Photograph by Ariana Lindquist/Bloomberg

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Wind Turbine Units

Dietz Brothers Inc. tower men Jonathan Thompson, from bottom, Ben Christianson, and Jake Bengtson climb a Polaris Industries Inc. wind turbine installed by Renewable Energy SD in Elgin, Minnesota, on Feb. 15, 2012. The U.S. wind and solar energy industries need an extension of production tax credits, which are scheduled to expire at the end of the year, Energy Secretary Steven Chu said.