Rafael A. Auras is a Professor in the School of Packaging at Michigan State University. He is a co-editor of both editions of Poly(lactic acid): Synthesis, Structures, Processing, Applications, and End of Life. Susan E.M. Selke is an emeritus Professor and former Director of the School of Packaging at Michigan State University. She is a co-editor of both editions of Poly(lactic acid): Synthesis, Structures, Processing, Applications, and End of Life.