John (Jack) Spengler, Akira Yamaguchi Professor of Environmental Health & Human Habitation at the Harvard School of Public Health and Co-Director of the Sustainability and Environmental Management Program at the Harvard Extension School, has conducted research in the areas of personal monitoring, air pollution health effects, indoor air pollution, and a variety of environmental sustainability issues. Several of his investigations have focused on housing design and its effects on ventilation rates, building material selection, energy consumption, and total environmental quality in homes. Spengler chaired the committee on Harvard Sustainability Principles; he served on Harvard’s Greenhouse Gases Taskforce to develop the University’s carbon reduction goals and strategies; and is currently a member of Harvard’s Greenhouse Gases Executive Committee. He has served on several National Academy of Sciences committees, including chairing the Green Schools committee, and has been an advisor to the World Health Organization on indoor air pollution, personal exposure and air pollution epidemiology. In 2003, Spengler received a Heinz Award for the Environment. In 2007, he received the Air & Waste Management Association Lyman Ripperton Environmental Educator Award. In 2008, he was honored with the Max von Pettenkofer Award for distinguished contributions in indoor air science from the International Society of Indoor Air Quality & Climate’s Academy of Fellows.