David Eisenberg is co-founder and Director of the Development Center for Appropriate Technology (DCAT) in Tucson, AZ. His three decades of building experience range from the on-site troubleshooting of the construction of the cover of Biosphere 2 to building a $2 million structural concrete house, a hypoallergenic structural steel house, and masonry, wood, adobe, rammed earth, and straw bale structures. For over a decade David has led the effort to create a sustainable context for building codes. He served two terms on the Board of the U.S. Green Building Council where he founded and chairs the Building Codes Committee. He was vice-chair of the ASTM E-06.71 Subcommittee on Sustainability for Buildings for five years. David has presented workshops, seminars, keynote addresses and lectures at dozens of international, national and regional conferences and lectured at universities in the U.S. and abroad. David is on the Advisory Board of Environmental Building News. He is co-author of The Straw Bale House book and has written dozens of published articles, forewords, book chapters and papers.