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Quakes tied to wastewater wells: fluid injection might have sparked Oklahoma tremors.
Pumping wastewater underground may rock Oklahoma. Vast quantities of water left over from oil and gas extraction and then injected into disposal wells may have set off a surge of earthquakes that have shaken the state since 2008.
And disposal wells don't just trigger quakes nearby. Tremors can rattle the ground up to 35 kilometers away--much farther than scientists had previously thought, researchers report July 3 in Science.
The new study is the most definitive to link...
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