Arpad Horvath’s interest in civil engineering and environmental systems stems from his work in the Green Design Initiative, an interdisciplinary research institute in environmentally-conscious design, engineering and manufacturing at Carnegie Mellon which he joined in 1993. He has performed research on environmental performance measurement, life-cycle assessment, product takeback systems, and environmentallyconscious design, material selection, and management in construction. His latest research concerns the supply-chain environmental implications of the service industries. He is the author of numerous journal and conference articles, and the recipient of the 1998-99 NSF-Lucent Technologies Industrial Ecology Fellowship, and the 1998-99 AT&T Industrial Ecology Faculty Fellowship. He is one of the creators of the first fully functional life-cycle assessment software on the World Wide Web (www.eiolca.net).