Daniel Vallero, PhD, is Adjunct Associate Professor in the Department of Civil and Environmental Engineering, Pratt School of Engineering, Duke University, where he leads the Engineering Ethics Program and teaches courses in green engineering and professional ethics. He has also conducted research related to environmental exposures and risk in human populations and ecosystems and has advised policy-makers around the world on a variety of human health risks and ecological issues.

Chris Brasier, AIA, LEED AP, is a Principal with SmithGroup, an architectural, engineering and planning practice. He is also a Lecturer in the Department of Civil and Environmental Engineering at Duke University where he is Director of the Architectural Engineering Certificate Program and co-teachesa course with Dr. Vallero in green engineering.