I am an environmental historian with an interest in business efforts to become more sustainable.  With Hartmut Berghoff, I coedited Green Capitalism? Business and the Environment in the Twentieth Century (Penn, 2017).  With Hartmut Berghoff, I coedited Green Capitalism? Business and the Environment in the Twentieth Century (Penn, 2017).  Recent articles include "Beyond Compliance: The Origins of Corporate Interest in Sustainability," Enterprise and Society (published online, 2020); and "DuPont and the Limits of Corporate Environmentalism," Business History Review 93 (Spring 2019): 75-99.  Though trained as a historian, I now teach in a department of environment and sustainability.  I am an expert in the history of environmental activism, and I have written books about the first Earth Day in 1970 and about the first efforts to address the environmental consequences of suburban sprawl.