Subject(s): Scarcity of natural resources -- Analysing the demographic trap : food , income, Rural landlessness , Population growth -- Assessing the future of urbanization : urban energy needs, Nutrient recycling, Ecology and economics of city size, Rural urban balance -- Reassessing nuclear power : chernobyl's toll, Nuclear power -- Electrifying the third world -- Realizing recycling's potential : garbage glut, solid waste management, Recycling -- Sustaining world agriculture : Cropland over expansion, Water and food, Food security -- Raising agricultural productivity : Green revolution, Traditional agriculture, Biotechnology -- Stabilizing : Chemical cycles, Human health -- Designing sustainable economies -- Charting a sustainable course , balance of carbon equation , Second energy revolution