David Eisenberg is the co-founder and executive director of the Development Center for Appropriate Technology (DCAT) in Tucson, Ariz. For over a decade, he has led a national effort to incorporate sustainability into the building regulatory system. David has a vision for a future where buildings do less harm and more good, and building departments become community resources for best building practices. DCAT’s DVD is called Building Codes for a Small Planet. To learn more about DCAT and David’s work, visit the DCAT Web site at www.dcat.net.