This is not just an issue in the US, Australia has similar environmental problems with coal-seam methane extraction by ‘fracking’: http://www.abc.net.au/4corners/content/2011/s3141787.htm
This is not just an issue in the US, Australia has similar environmental problems with coal-seam methane extraction by ‘fracking’: http://www.abc.net.au/4corners/content/2011/s3141787.htm