Michael Nutter (former Mayor of Philadelphia and David N. Dinkins Professor, Columbia University) speaks with Hank about his improbable path to becoming mayor of Philadelphia, how mayors are uniquely qualified to lead on sustainability issues, working with mayors across the US and in China, the national conversation around racial equity and social justice, and the future of cities in a post-COVID society. Episode 31 was recorded on Friday, November 20, 2020. Michael Nutter: www.sipa.columbia.edu/faculty-research/faculty-directory/michael-nutter