Interview covers period through 1968. Born in New Jersey in 1934; recollections of early home life, education at Rahway High School, undergraduate and graduate work at the University of Chicago; interactions with H. J. Muller, Harold C. Urey, and Gerard P. Kuiper; impressions of Yerkes Observatory and staff; work at Armour Research Foundation; reactions to thesis research on atmosphere of Venus and organic material on the Moon; postdoctoral appointment at University of California, Berkeley, 1960-1962; subsequent appointment to the Harvard College Observatory, 1962-1968; then Cornell University, 1968 to present. Recollections of research collaborations with I. S. Shklovskii, Melvin Calvin, Joshua Lederberg, James Pollack, and others; research on planetary atmospheres; appointment as editor of ICARUS; and formation of Division of Planetary Sciences; involvement in various organizations and causes.