Large cracks in the sidewalk in Coyle, Okla., appeared after several earthquakes on Jan. 24. J Pat Carter/Getty Images hide caption

toggle caption
J Pat Carter/Getty Images

U.S. Geology Maps Reveal Areas Vulnerable To Man-Made Quakes

  • Download
  • <iframe src="https://www.npr.org/player/embed/472232829/472232830" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Workers use perforating tools to create fractures in rock. An EPA study finds that "fracking" to reach and extract deep pockets of hydrocarbons has not caused widespread drinking water pollution. Brennan Linsley/AP hide caption

toggle caption
Brennan Linsley/AP

EPA Finds No Widespread Drinking Water Pollution From Fracking

  • Download
  • <iframe src="https://www.npr.org/player/embed/412047602/412177096" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Pumpjacks at the Inglewood oil fields in California in March. Some of the most controversial methods of oil extraction, like fracking, oil sands production and Arctic drilling, are also expensive. That's made them less profitable as the price of oil continues to fall. Richard Vogel/AP hide caption

toggle caption
Richard Vogel/AP

Falling Oil Prices Make Fracking Less Lucrative

  • Download
  • <iframe src="https://www.npr.org/player/embed/361204786/361320155" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript