World Environment 1972-1992

Our planet is under siege. Assaults on the atmosphere -the greenhouse effect, the depletion of the ozone layer and increasing air pollution - pose a still­ unquantified threat to human life. The dumping of hazardous wastes, and land­ based sources of pollution, present a similar threat to the oceans. On land we are destroying a tropical forest the size of Austria every year, and more than a hundre...