When we hear the term "sustainability" for biomass energy feedstocks being discussed or debated, often we really don't know what "specifics" are being proposed. Most of the time it just seems that (1) Project developers' concept of "green" only involves making money; (2) the agenda of many environmental groups (like the Sierra Club) is to kill projects and not find solutions; (3) Legislators don't have a clue on science. In our collaborative work...