 Top scientists defend biofuels in RFS court filing. You're listening to the American Ag Network. I'm Jesse Allen with News of Agriculture. Eight of the nation's top agricultural biomass and greenhouse gas lifecycle scientists filed an amicus brief on July 3rd that challenged the faulty assumptions underpinning a number of attacks on the renewable fuel standard. The brief was filed in the U.S. Court of Appeals for the District of Columbia Circuit in the Center for Biological Diversity v. EPA et al. case.