Professor Wargo’s most recent work has focused on children’s exposure to air pollution, especially diesel emissions. He has conducted extensive research on childhood vulnerability to complex mixtures of toxic substances, particularly pesticides. His research explores spatial, temporal, and demographic distribution of environmental health risks, providing a basis for evaluating past environmental and natural resource management policies, and for suggesting legal reform. Our Children’s Toxic Legacy: How Science and Law Fail to Protect Us from Pesticides, a book published by Professor Wargo in 1996, presents a history of law governing pesticides and a history of scientific evidence of pesticide risks during the second half of the twentieth century. The work suggests fundamental reforms of science and law necessary to identify and contain health risks. It won the American Association of Publishers award as the Best Scholarly Professional Book in Government and Political Science in 1996. Professor Wargo has also conducted extensive research on the ecological basis of park and protected area management, concentrating on the Adirondack Park in New York, barrier islands within U.S. National Seashores, and UNESCO Biosphere Reserves. He is affiliated with the Yale–New Haven Teachers Institute, and works with urban primary and secondary school teachers in developing environmental curriculum units. He is a fellow of Branford College.