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Wood fuel, or firewood, is a traditional and widely - used biomass fuel from trees and woody plants. Obtained by cutting, drying, and burning, it generates heat for cooking, heating, etc. in households.
For centuries, especially in forest - rich rural areas, it has been a major energy source. While renewable, unsustainable use can cause deforestation and environmental problems. Inefficient stoves using wood fuel also lead to high indoor air pollution, harming people exposed to the smoke.
Today, efforts focus on enhancing its sustainability and efficiency via improved stove designs and sustainable forestry methods.