Working To Make the Aviation Sector Less Spooky and More Sustainable DOE Office of Energy Efficiency and Renewable Energy sent this bulletin at 10/27/2021 02:02 PM EDT Having trouble viewing this email? View it as a Web page. Bioenergy Technologies Office October 27, 2021 Working To Make the Aviation Sector Less Spooky and More Sustainable Think Green for Halloween! Sustainable Aviation Fuel has the potential to reduce carbon emissions from airplane flights, making flying a lot less frightening.