InsideClimate: Colorado's tough, new air pollution rules for the oil and gas industry were approved only a month ago but they're already making an impact in Texas, where lawmakers and energy companies have long resisted tightening air standards.
Several companies have approached the nonprofit Environmental Defense Fund and expressed interest in discussing whether Colorado's rules make sense for Texas, according to Jim Marston, a vice president at EDF. Marston didn't name the companies.
"The companies are...