The 2014 BP Statistical Review of World Energy, released this month, is a rather dry document made up of spreadsheets and a few charts filled with stats on global energy production and consumption during 2013. But look behind the numbers, and what you’ll find is anything but dull: A detailed accounting of how much energy the globe’s 7.2 billion people are using and where they are getting it. Continue reading
The Pennsylvania Department of Health instructed its employees never to talk to residents who complained of negative health effects from fracking, StateImpact Pennsylvania reported Thursday. Two retired employees of the department detailed restrictions on attending meetings, lists of topics they could not discuss, and a general departmental hostility to the idea of health problems linked to shale gas drilling. The state’s governor, Tom Corbett, declined to comment for StateImpact Pennsylvania’s story. Continue reading
As is the case elsewhere in the world, there is evidence that some central and eastern North America earthquakes have been triggered or caused by human activities that have altered the stress conditions in earth’s crust sufficiently to induce faulting. Activities that have induced felt earthquakes in some geologic environments have included impoundment of water behind dams, injection of fluid into the earth’s crust, extraction of fluid or gas, and removal of rock in mining or quarrying operations. In much of eastern and central North America, the number of Continue reading
Federal worker safety investigators are looking into the dangers of flowback tanks at oil and gas sites, in response to the deaths of at least four men who collapsed while taking measurements at tanks in the Bakken Shale. Continue reading
One of Oklahoma’s biggest man-made earthquakes, caused by fracking-linked wastewater injection, triggered an earthquake cascade that led to the damaging magnitude-5.7 Prague quake that struck on Nov. 6, 2011, a new study confirms.
The findings suggest that even small man-made earthquakes, such as those of just a magnitude 1 or magnitude 2, can trigger damaging quakes, said study co-author Elizabeth Cochran, a seismologist with the U.S. Geological Survey.
“Even if wastewater injection only directly affects a low-hazard fault, those smaller events could trigger an event on a larger fault nearby,” she told Live Science. Continue reading