BOULDER, Colorado, March 21 -- The Cooperative Institute for Research in Environmental Sciences issued the following news: * * * - CU Boulder-led team uses cutting-edge instrumentation, techniques to affordably separate methane emission sources * * * With natural gas booming across the Front Range, drilling rigs may operate within feet from cattle farms. That shared land use can confound attempts to understand trends in methane, a greenhouse gas and air pollutant--the gases emitted from thes  more