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Liberal candidate wins Wisconsin Supreme Court race in blow to Trump, Musk; Montana scores 'C-minus' on infrastructure report card; Colorado's Boebert targets renewed effort to remove federal wolf protections; Indiana draws the line on marijuana promotions.

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Speaker Johnson cites constitutional limits to a third presidential term. Groups plan nationwide protests against executive overreach. Students raise concerns over academic freedom following a visa-related arrest in Boston. And U.S. Senate resolution aims to block new tariffs on Canada.

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Air and water pollution is a greater risk for rural folks due to EPA cutbacks, Montana's media landscape gets a deep dive, and policymakers are putting wheels on the road to expand rural health.

USGS: Man-made Earthquakes Up 4,000 Percent in NM

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Monday, April 27, 2015   

SANTA FE, N.M. - Man-made earthquakes in New Mexico, linked to oil and gas exploration, have increased by about 4,000 percent in recent years, according to a new report from the U.S. Geological Survey.

Robert Williams, a geophysicist with the USGS, explains how the millions of gallons of water extracted with oil and gas, and then returned underground through disposal wells, appear to be causing the instability that leads to more earthquakes.

"When you inject that water back into a different location in the earth, you're changing the stress conditions of the rocks," says Williams. "It can lead to changes and stresses on the fault, and weaken those forces holding the fault together, which can then cause an earthquake."

In the first 13 years of this century, Williams says there were 16 earthquakes measured at magnitude 3.8 in New Mexico compared to only one quake of that size in the preceding 32 years. He says the major spike in quake activity began in 2009, and mirrors major growth in oil and gas development. Williams says the USGS will use its research to help in future forecasting of earthquakes.

The report also notes major man-made earthquake increases in Alabama, Arkansas, Colorado, Kansas, Ohio, Oklahoma, and Texas. Williams says last year, Oklahoma, the most active of the states for the first time ever, had more quakes of 'magnitude three' and higher, than California.

"For Oklahoma in 2014, there were 585 earthquakes magnitude three and greater," he says. "California had about 200 of that size."

Prior to 2009, Williams says Oklahoma experienced one or two quakes of a 'magnitude three' or higher each year whereas now, there are one or two quakes that size, each day.


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