Auburn University researchers are working on a bio-based additive to make diesel fuel burn cleaner as part of a $2 million U.S. Department of Energy project that will see researchers at the University of Alabama help test the blend. The $2 million project led by Auburn is part of about $10 million in funding from the DOE for the co-optimization of engines and fuels. The department is providing $80 million for 42 projects to support advanced vehicles technologies research. Sources: Tuscaloosa News , ABC 33/40 (Birmingham), Fox 6 (Birmingham), WAFF-NBC (Huntsville), Yellowhammer News