title: The carbon footprint of transportation fuels.
authors.forename: Kris
authors.initials: K
authors.lastname: Christen
mesh_terms: D000397:Air Pollution / Q000517:prevention & control; D002140:California; D002244:Carbon; D004736:Energy-Generating Resources; D017752:Greenhouse Effect; D014186:Transportation
chemical_list: D002244:Carbon