1. 19-10-1994 Recovery of city waste Earthworms as credit Organic wastes hijacked Recycle or pollute Micro-organisms Recycling urban night soil Modified anaerobic composting Drawing bioresource flows
  2. 01-01-1986 Modern machines form paper in a continuous ribbon or web, not a single sheet at a time as did the ancients. A good papermaker in the olden days could make enough sheets in a day to weigh about 90kg. Today, an average machine makes 90,000kg per day! Much of the paper produced ultimately ends up as...
  3. 01-01-1984 Metal scrap, although unfamiliar to most people, is one of the world's larger industries with regard to the number of companies and people employed, weight of material handled and value of equipment used. It offers exceptionally good opportunities, for creating new businesses in developing...
  4. 01-01-1986 This paper briefly describes the production of glass and its properties, and gives some methods for recycling it. The uses of glass are not limited to these examples and there may indeed be far more inventive ways to reuse glass than are cited here. It is important to remember that any effort to...
  5. 19-10-1997 Rebuilding lost soil fertility A tool for quantitative farm analysis Intensification of swidden agriculture in the Philippines Poor soils need organic matter Indigenous green manure in Nepal New Kekulam Recycling household waste in Egypt Biomass transfer
  6. In the developing world there is a huge and growing waste problem. Currently, 9 million people die every year due to the mismanagement of waste and pollutants. That's 20 times more people than die of malaria. If we ignore this waste problem, we will miss a key opportunity to save lives and create...