Kassotis Frack (IMAGE) Duke University Caption Duke scientists used cells in culture to test samples of fracking wastewater and contaminated surface water. On the left, a drug called rosiglitazone is known to create fat cells and cause weight gain. On the right, diluted fracking wastewater. Yellow marks accumulation of fat within cells. Blue marks new fat cells being created. Credit Chris Kassotis, Duke University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.