Protesters gather on the plaza across from the state Capitol in Nashville, 

Protesters gather on the plaza across from the state Capitol in Nashville, Tenn., on Friday, March 15, 2013, to speak out against a University of Tennessee plan to allow hydraulic fracturing to extract natural gas on a state-owned tract of rolling woodland. (AP Photo/Erik Schelzig)
Associated Press
Protesters gather on the plaza across from the state Capitol in Nashville, Tenn., on Friday, March 15, 2013, to speak out against a University of Tennessee plan to allow hydraulic fracturing to extract natural gas on a state-owned tract of rolling woodland. (AP Photo/Erik Schelzig)
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