estic ide . ▁ ▁The ▁N F ES C , ▁with ▁Santa ▁Barbara - based ▁B iod ies el ▁Indust ries ▁is ▁working ▁to ▁develop ▁b iod ies el ▁techn ologies ▁for ▁the ▁US ▁n avy ▁and ▁military , ▁one ▁of ▁the ▁largest ▁dies el ▁fuel ▁users ▁in ▁the ▁world . ▁ ▁A ▁group ▁of ▁Spanish ▁developers ▁working ▁for ▁a ▁company ▁called ▁E c of asa ▁announced ▁a ▁new ▁bio f uel ▁made ▁from ▁tr ash . ▁The ▁fuel ▁is ▁created ▁from ▁general ▁urban ▁waste ▁which ▁is ▁treated ▁by ▁b acter ia ▁to ▁produce ▁fat ty ▁ac ids , ▁which ▁can ▁be ▁used ▁to ▁make ▁b iod ies el . ▁ ▁Another ▁approach ▁that ▁does ▁not ▁require ▁the ▁use ▁of ▁chemical ▁for ▁the ▁production ▁involves ▁the ▁use ▁of ▁gen et ically ▁modified ▁micro bes . ▁ ▁Alg al ▁b iod ies el ▁ ▁From ▁ 1 9 7 8 ▁to ▁ 1 9 9 6 , ▁the ▁U . S . ▁N RE L ▁experiment ed ▁with ▁using ▁alg ae ▁as ▁a ▁b iod ies el ▁source ▁in ▁the ▁" A qu atic ▁Species ▁Program ". ▁A ▁self - pub lished ▁article ▁by ▁Michael ▁Brig gs , ▁at ▁the ▁UN H ▁B iod ies el ▁Group , ▁offers ▁estimates ▁for ▁the ▁real istic ▁replacement ▁of ▁all ▁veh icular ▁fuel ▁with ▁b iod ies el ▁by ▁util izing ▁alg ae ▁that ▁have ▁a ▁natural ▁oil ▁content ▁greater ▁than ▁ 5 0 %, ▁which ▁Brig gs ▁suggests ▁can ▁be ▁grown ▁on ▁alg ae ▁p onds