September 21, 1981 | Philip G. Howlett
Robert H. Boyle, whose study of the effects of acid precipitation begins on page 68, lives high on a hill above the Hudson River, in Cold Spring, N.Y., where he ponders "the thread of my life—nature and man's role in...
February 07, 1977 | Edited by Robert W. Creamer
February 26, 1973 | John A. Meyers