A friend who is inclined to a somewhat cynical view of the world asked in his newsletter, “What does sustainability mean?” He asserted that the concept could not be defined in a meaningful way and so meant nothing. A reasonable answer to his question is provided in a new book from IFT Press. The book, Sustainability in the Food Industry, edited by Cheryl J. Baldwin (2009), consists of 11 chapters written by a distinguished group of authors including my fellow columnist Aaron Brody and Kantha She…