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23 items found (Showing 1 - 10)
  1. 1993-07-19 Wayne DeYoung in Haiti writes about a pump that he is sure will interest ournetwork. It was used in a water well project by Dan Cook and others in Haiti. Wayne believes that it has phenomenal value for many gardening situations along rivers or ponds or where a hand dug well is available. His...  
  2. Key Resource 2001-01-01 Access to clean drinking water remains one of the greatest challenges in the world. The BioSand Filter is one method that can be used for purifying water at the household level. With this filter, contaminated water is filtered through a natural biological layer and then layers of sand, pebbles...  
  3. 2001-01-01 There are many variations of sawdust cookstoves that have been used for many years both in North America and around the world. This sawdust cookstove model provides a low-cost, low-input method for producing a high intensity flame that will burn for up to five hours. The flame burns fairly clean...  
  4. 2001-01-01 When organic material decomposes under anaerobic conditions, it produces biogas which is a mixture of methane (CH4) and carbon dioxide (CO2) with small quantities of hydrogen, nitrogen, carbon monoxide and other compounds. Biogas can be used as a fuel source for cooking, heating, producing light...  
  5. 2002-01-01 A composting toilet is any system that converts human waste into compost through the natural breakdown of organic matter. The photo above shows a composting toilet from the late 1800’s. Composting toilets provide a sanitary method to recycle human waste while conserving water and protecting the...  
  6. 2004-07-01 We read an article in Appropriate Technology (Volume 28, No. 3; July/September 2001) about farmers in Niger who used bottle caps to distribute tiny amounts of fertilizer. Despite drought conditions, farmers who used this technique harvested 50 to 100 percent more millet than those who did not.