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15 items found (Showing 1 - 10)
  1. Key Resource 2011-01-01 A sand dam is a reinforced concrete wall built across a seasonal river to hold underground water in sand (see above photo of Nzaaya Muisyo sand dam, Eastern province, Kenya). It is initially built one meter high and up to 90 meters across. During the heavy and erratic seasonal rains, the water...  
  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. Key Resource 2018-02-09 Traditional diets included a wide variety of ingredients from myriad wild and domesticated plants. Regional cuisines were shaped by native species in their local environment and by gradually-adopted plants from distant places. The modern global food system and market pressures have reversed this...  
  4. Key Resource 2016-02-05 Until recently, firewood was taken for granted in northern Thailand. With vast forests full of many types of trees, upland households could afford to be choosy concerning the wood they used for cooking. However, in recent years, more and more communities are facing restricted access to forest...  
  5. 2013-01-01 Ces directives donnent une vue d’ensemble des bonnes pratiques éprouvées de collecte de l’eau dans le monde entier. Celles-ci constituent un guide de référence pratique tout en offrant un support et une expertise technique spécifique pour l’intégration des technologies de collecte de l’eau dans...  
  6. AccessAgriculture Training Video Stone lines induce a natural process of terracing as they trap sediments. Stone lines or stone bunds can slow down runoff, increase water infiltration and form the basis for improved production in semi-arid areas. By using the contours of low slopes water...  
  7. 2020-10-16 On September 3, 2020, ECHO held its first virtual Appropriate Technology (AT) Fair. As this year has brought many challenges for in-person gatherings, we were grateful for all who took advantage of the shift towards virtual gatherings and participated in this event. It was an enriching time for...  
  8. 2018-10-17 Rarely is an easy-to-grow and attractive ornamental also a tasty, edible leafy green, suitable for salads, sandwiches, soups, and stews. Jewels of Opar (Talinum paniculatum), also called fameflower, grows similarly to purslane. As such, it can reseed itself and grows easily, with little need for...  
  9. 2018-10-17 Green leafy vegetables are an important source of vitamins and minerals. In areas where eating leaves is not part of the culture, leaf powder can be an important addition to the diet. We have written in the past about the positive difference that leaf powder can make in terms of nutrition. Here...  
  10. 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...