urban ecolocsy and the air environment

A feature of the 62nd annual meeting of the Air Pollution Control Association, held June 22-26, 1969 in New York City, was a plenary session on Urban Ecology and the Air Environment. Moderated by Norman Cousins, editor of The Saturday Review of Literature, the session developed the theme through the outspoken and personal viewpoints of four distinguished panelists: Austin N. Heller, Aaron J. Teller, Barry Commoner, and Stewart L. Udall. The essence of their remarks appears on the following pages.