July 22, 2015, 6am PDT
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.
The Denver Post - Business
December 10, 2014, 8am PST
Oil prices are at a five-year low with gasoline prices averaging $2.67 a gallon, lowest since February 2010. Furthermore, they are expected to drop another 17 cents to $2.50 a gallon in time for Christmas, so why not raise the gas tax by a nickel?
August 31, 2010, 12pm PDT
The global courier has transformed the way packages are delivered around Paris by deploying large eco-friendly tricycles that go beyond the curb.