Químicos del fracking detectados en agua potable de Pennsylvania

Fracking Chemicals Detected in Pennsylvania Drinking Water

4 de mayo, 2015

The New York Times

http://www.nytimes.com/2015/05/05/science/earth/fracking-chemicals-detected-in-pennsylvania-drinking-water.html?_r=0

Oklahoma Recognizes Role of Drilling in Earthquakes

21 abril 2015

Abandoning years of official skepticism, Oklahoma’s government on Tuesday embraced a scientific consensus that earthquakes rocking the state are largely caused by the underground disposal of billions of barrels of wastewater from oil and gas wells.

http://mobile.nytimes.com/2015/04/22/us/oklahoma-acknowledges-wastewater-from-oil-and-gas-wells-as-major-cause-of-quakes.html