Eco-catastrophe, by P. Ehrlich.--Ecology: the relentless science, by R. Rienow and L. T. Rienow.--The human ecosystem, by M. Bates.--Toxic substances and ecological cycles, by G. M. Woodwell.--World population problem, by J. Huxley.--Population policy: will current programs succeed? By K. Davis.--The tragedy of the commons, by G. Hardin.--The fog, by B. Roueché.--The national pollution scandal, by G. Nelson.--Mississippi fish kill, by F. Graham, Jr.--A song of San Francisco Bay, by M. Reynolds.--Alaska - the ecology of oil, by B. Weisberg.--The infernal smog machine, by F. Graham, Jr.--The myth of the peaceful atom, by R. Curtis and E. Hogan.--Wilderness as a tonic, by J. W. Krutch.--The outlying rocks, by P. Matthiessen.--A wild river that knew Boone awaits its fate, by H. M. Caudill.--To survive on the earth, by B. Commoner.--The other road, by R. Carson.--Office of Conservation, by W. O. Douglas.--The economics of the coming spaceship earth, by K. E. Boulding.--The politics of population/second edition, by A. Huxley. Bibliography (p. 340-342)