Some oil and gas companies supported the rules.
by Sarah Gilman,
Mar 17, 2014
Researchers attempt to tease out the health effects of emissions from oil and gas drilling.
by Cally Carswell,
Sep 02, 2012
Colorado environmentalists goofed when they opposed a bill that would have harnessed the methane produced by coal mines as a form of renewable energy.
by Allen Best,
Jun 27, 2012