Aaron Imrie authored an article on the growing sustainable aviation fuel sector and its potential role in meeting GHG emission reduction goals. The article discusses the production of sustainable aviation fuel, how it differs from Jet A and renewable diesel fuel, and the challenges of growing sustainable aviation fuel production capacity in competition with renewable diesel demand. The article is the sixth in a series that covers how low carbon policies are impacting the transportation sector and the alternative fuels and pathways being utilized and evaluated by fuel suppliers around the globe to meet the increasingly stringent regulations.