Oklahoma warns of more quakes from energy drilling

Oklahoma regulators said Tuesday that the number of induced earthquakes could increase as oil and gas production expands in a broad area of the state, and they're telling energy companies that they need to be ready to shut ...

California officials challenge fracking off coastline

California's chief prosecutor and an environmental commission on Monday filed a lawsuit challenging an assessment by federal authorities that clears the way for hydraulic fracturing off the state's coast.

Study links groundwater changes to fracking

A new study has found heightened concentrations of some common substances in drinking water near sites where hydraulic fracturing has taken place. The substances are not at dangerous levels and their sources are unclear, ...

Solution blooming for fracking spills?

North Dakota's oil boom can have a salty side-effect. Wastewater from oil drilling and hydraulic fracturing – or fracking – is often laden with salts and can spill, contaminating soils. In 2014, for example, 42 such brine ...

Scientists moot 'green fracking' technique

Adding CO2 instead of water to the cocktail used in fracking, could boost oil and gas extraction and help fight global warming at the same time, scientists said Tuesday.

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