Jill JonnesJill Jonnes holds an M.S. from Columbia Journalism School and a Ph.D. in American History from Johns Hopkins University. She is the author of Empires of Light: Edison, Tesla, Westinghouse, and the Race to Electrify the World; Conquerng Gotham: Building Penn Station and Its Tunnels; and Urban Forests: A Natural History of Trees and People in the American Cityscape. Read More Read Less