Christian SeigneurChristian Seigneur is a Professor at École des Ponts ParisTech, one of France's premier engineering graduate schools. He has both academic and private-sector experience in the field of air pollution. He was the director of a Research Center on the Atospheric Environment for nine years. Previously, he was a vice-president at Atmospheric & Environmental Research, Inc. (AER), a research and consulting company, where he led the Air Quality Division located in California. He has published extensively in the scientific literature and has been an expert advisor to the US Environmental Protection Agency and the French Agency for Health and Safety. Read More Read Less