Fracking in North Dakota (1 of 2) (image) Duke University Share Print E-Mail Caption One of the 9,700 oil and gas wells drilled in North Dakota in the last decade. A Duke study has found wastewater spills are widespread, causing long-lasting contamination of soil and water. Credit Avner Vengosh Usage Restrictions None Share Print E-Mail 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.