His book “Environmental Activism and the Urban Crisis: Baltimore, St. Louis, Chicago” will be published in May by Temple University Press in the Urban Life, Landscape and Policy series. This work explores how urban residents responded to the environmental problems caused by the destruction of America’s older industrial cities in the decades after World War Two. For Baltimore he shows how opposition to the city’s planned highway system in the 1960s and 1970s was a form of environmental activism.