Life cycle assessment [LCA] is an analytical methodology that is employed to calculate the carbon footprint of fuels (as well as many other products). The fundamental premise underlying LCA is that a fuel's carbon footprint encompasses more than just the greenhouse gases [GHG] that are directly emitted through the tailpipe/smokestack when it is combusted. To take an example from the oil & gas sector, a gallon of gasoline that is derived from Saudi crude will emit roughly the same amount of vehicle tailpipe GHGs when it is combusted as a gallon of gasoline that is