Sills, David L.2019-04-032019-04-032011http://hdl.handle.net/10673/524The past decade has witnessed a sharpened interest, among both the public and scientists, in manls environment- often but not alwaysw ith referencet o a so-called environmental crisis. There has been vastly increased attention in the mass media; it is reported that some 300 books on the environment, on ecology, and on pollution were published in the United States in 1972 alone (Sinclair, 1973, p. 176); there has been a dramatic increase both in the size of existing voluntary associations devoted to the improvement or preservation of some aspect of the environment and in the number of new ones; public information and educational activities have flourished; the use of litigation in order to achieve environmental goals has become common; and the terms "environment"enecology movement,environmental movement