Science fiction writers have long warned, in an astonishing variety of stories and interpretations, of the ecological crisis that controls mankind. Frederik Pohl, a master of future prognostication himself, has selected superb representative stories from the thousands that exist. Contents: Station HR972 • (1967) • short story by Kenneth Bulmer X Marks the Pedwalk • (1963) • short story by Fritz Leiber A Bad Day for Sales • (1953) • short story by Fritz Leiber The Midas Plague • (1954) • novella by Frederik Pohl Among the Bad Baboons • (1968) • novelette by Mack Reynolds The Marching Morons • (1951) • novelette by C.M. Kornbluth New Apples in the Garden • (1963) • short story by Kris Neville Uncalculated Risk • (1962) • short story by Christopher Anvil The Year of the Jackpot • (1952) • novelette by Robert A. Heinlein The Luckiest Man in Denv • (1952) • short story by C.M. Kornbluth The Census Takers • (1956) • short story by Frederik Pohl Day of Truce • (1963) • novelette by Clifford D. Simak Eco-Catastrophe! • (1969) • short story by Paul R. Ehrlich Introduction (Nightmare Age) • essay by Frederik Pohl