Anu Ramaswami, PhD, is an Associate Professor of Environmental Engineering in the Civil Engineering Department of the University of Colorado at Denver. She serves on the editorial board of the International Journal of Phytoremediation and chairs the technical advisory board of Engineers Without Borders–USA.

Jana B. Milford, Phd, is an Associate Professor of Mechanical Engineering at the University of Colorado at Boulder. She recently served on the National Research Council Committee on Air Quality Management in the United States, and is a member of the editorial advisory board for the journal Environmental Science & Technology.

Mitchell J. Small, Phd, is the H. John Heinz III Professor of Environmental Engineering at Carnegie Mellon University, Pittsburgh, Pennsylvania. He is a Fellow of the Society for Risk Analysis and serves as an associate editor for the journal Environmental Science & Technology.