on the status of alternative liquid transportation fuel technologies as well as other efforts to develop alternative transportation fuels. Chapter 4 describes some of the environmental, economic, and social impacts associated with current- and next generation biofuels. Chapter 5 provides a perspective on issues to be addressed as part of the transition to advanced biofuels, including federal policy, research needs, and tools and indicators needed by decision makers to assess the consequences and tradeoffs of expanding production and use.
The report appendixes include the workshop agenda, brief biographies of workshop speakers, a selected bibliography of reports and papers addressing issues of biofuels and sustainability, a background paper describing the biofuels policies in the three Upper Midwest states, and a paper on tools and indicators used to assess various aspects of biofuel production and use. The appendixes also include examples of ongoing federal research programs and projects related to sustainability and biofuels.