Michael P. Walsh is a mechanical engineer who has spent his entire career working on motor vehicle pollution control issues at the local, national and international level. For the first half of his career, he was in government service, initially with the City of New York and subsequently with the US Environmental Protection Agency. In each organization he was eventually the Director of their motor vehicle pollution control programs. Since leaving government, he has been an independent consultant, working extensively in many countries around the world. He served as co-chairman of the US EPA’s Mobile Sources Technical Advisory Subcommittee for approximately 12 years. He is a recipient of the USEPA Lifetime Individual Achievement Award, the California Air Resources Board’s “Haagen Smit” award and was selected as a MacArthur Fellow for “extraordinary originality and dedication”. In 2009, he received the Silver Magnolia award for his service to the City of Shanghai. In 2010 he received the Friendship award, the highest award for international experts in China. He was the Founding Chairman of the Board of Directors of the International Council on Clean Transportation.