Almost half of the world cooks with biomass (wood or dung or coal). Improved cookstoves burn biomass more efficiently, reducing fuel consumption and indoor air pollution by 90%. This reduces respiratory illness and pollution-related diseases, and saves significant time on firewood collection.
Another cooking fuel comes from biogas digesters. When used with small-scale livestock husbandry (as few as four pigs or one cow), they offer a range of direct benefits, such as the production of cooking gas as well as organic, nutrient-rich fertilizer.