How much do we understand about the nature and possible consequences of environmental threats? How are individuals, industry and governments facing up to the destructive potential of ecological degradation? In Sustaining Earth, leading scientists describe and explain the principal environmental threats and their implications. Eminent statesmen, environmentalists and industrialists assess the world's response to these threats in the context of the recommendations of the World Commission on Environment and Development (Brundtland Commission) and the concept of sustainable development.