Pawnee nation lawsuit marks the first time an insurance company has sued oil companies for earthquake-related damages.

Two Interior Dept. bureaus have concluded that oil and gas well-stimulation techniques, including hydraulic fracturing, off the coast of California do not pose a significant environmental risk.

As critics decry the large quantities of water that fracking demands, putting pressure on resources, manufacturers and energy-services firms are touting new technologies that use less.

In the early days of the shale-gas boom that is now at full throttle around the U.S. and the globe, speculators rushed into hydrofracking with high hopes, often with little attention to how much water would be needed or the best practices for managing the water when they were done with the wells.

The sun is rising on northwestern North Dakota, casting mottled light across the prairie and the faces of an army of oil workers.

As New York intensifies its debate over whether to employ hydraulic fracturing techniques to recover shale-gas deposits in the Marcellus shale formation, Gov. Andrew Cuomo is sticking to his pledge to "let the science and the facts" determine if the state' should lift a two-year moratorium on fracking.

Seismic monitoring continues around a deep fracking wastewater well in Ohio after a magnitude-4.0 earthquake and 10 other earthquakes were tentatively linked to activity at the well.