Macro-Scale LCA Conventional forms of LCAprocess LCAmove from the specific details of production outward, up and down the supply chain to add up total environmental impact. There are, however, forms of LCA called economic input-output LCA that begin with macro statistics on flows in whole economic sectors, and proportionally deduce resource use and pollution for specific projects or products. The two most well-known examples are the EIOLCA software developed by the Green Design Initiative of Carnegie-Mellon University, and Baseline Green, developed by Austins Maximum Potential Building Systems (Maxs Pot), Sylvatica Consultants, and Kansas Citys BNIM Architects. The EIOLCA software is based on public data setsfrom, for example, the US Dept. of Commerce and US Environmental Protection Agency (EPA). While it is not a satisfactory alternative to conventional process-based LCA for all purposes, it can give