BIOFUELS: Dueling RFS ads come to D.C.'s airwaves Amanda Peterka, E&E reporter Published: Thursday, March 20, 2014 Both supporters and opponents of renewable fuels are launching ad campaigns in the coming days. Please subscribe to E&ENews PM to read the full story. Username: Password: Forgot your access codes? Recover them. Not a subscriber? Sign up for a trial. Ready to subscribe? Click here.