Blog: Moving from Coal to Gas
Wednesday, July 4, 2012
Andrew Revkin, writer for the New York Times, posted a blog post several months ago about the benefits of moving from coal to natural gas.
Revkin quotes Lawrence M. Cathles of the Department of Earth and Atmospheric Sciences.
“The data clearly shows that substituting natural gas for coal will have a substantial greenhouse benefit under almost any set of reasonable assumptions. Methane emissions must be five times larger than they currently appear to be before gas substitution for coal becomes detrimental from a global warming perspective on any time scale. The advantage of natural gas applies whether it comes from a shale gas well or a conventional gas well.”
Cathles admits, however, that burning natural gas is still burning a fossil fuel, an act that releases greenhouse gases into the atmosphere and causes global warming.
» Via: The New York Times › A Fresh Scientific Defense of the Merits of Moving from Coal to Shale Gas
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Shale FAQ
What is fracking?
Fracking is a slang term for hydraulic fracturing. Fracturing is a process by which highly pressurized fluid is pumped thousands of feet into the ground to fracture rock formations. The goal is to release the natural gas that’s locked inside the rock.
Is it safe?
What most concerns people about fracturing is ground water contamination. The worry is that fractures underground, caused by the process, will extending upwards and into aquifers, releasing gas and chemicals into the ground water supply. There’s been no confirmed reports of such a thing happening. Though surface spills and drill site blowouts can lead to localized environmental concerns.
Will my water catch on fire?
Flammable water is caused by the release of methane gas into a drinking water supply. Methane gas occurs naturally and can be released by any kind of drilling, including water wells. In Pennsylvania officials fined Chesapeake Energy $1 million for contaminating ground water with methane. It was determined that the company had not properly cemented it’s boreholes and gas migrated up the well, between rock and into aquifers.