Guest speaker Stephen Ritz answers audience questions after his lecture, entitled “Farming for the Future: Investing in Your Community To Change the World,” on Tuesday in Van Meter Auditorium. Ritz spoke on his eff orts with the “Green Bronx Machine,” a sustainable farming initiative for public school students in the Bronx. His talk was part of the annual Mary E. Hensley Lecture Series sponsored by the College of Education and Behavioral Sciences. Brandon Carter/HERALD