Carbon Credits

Jets no longer run solely on fuel derived from petroleum, thanks in part to Colorado-based Red Rock Biofuels. They signed contracts with FedEx and Southwest Airlines for "renewable jet fuel" that is derived from wood-based biomass.
Jul 22, 2015   The Denver Post - Business
California's climate law reached a milestone on Nov. 14 when the state auctioned its first carbon credits in the 'Cap & Trade' provision of the bill. But that didn't stop the CA Chamber of Commerce from filing suit against this provision of the law.
Nov 15, 2012   The Sacramento Bee - Business