A worker helps monitor water pumping pressure and temperature at an Encana Oil & Gas (USA) hydraulic fracturing and extraction site outside Rifle in western Colorado on March 29, 2013.
A worker helps monitor water pumping pressure and temperature at an Encana Oil & Gas (USA) hydraulic fracturing and extraction site outside Rifle in western Colorado on March 29, 2013. Brennan Linsley Associated Press
A worker helps monitor water pumping pressure and temperature at an Encana Oil & Gas (USA) hydraulic fracturing and extraction site outside Rifle in western Colorado on March 29, 2013. Brennan Linsley Associated Press

Exposure to fracking chemicals makes fat cells grow, Duke scientists say

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