More than 2 billion people use wood,
charcoal, dung or agricultural residues as the primary fuel for their cooking
and heating needs, leading to significant health, economic and environmental
consequences. Burning wood or agricultural residues produces smoke with a
variety of irritant pollutants, some of which are known carcinogens. More than
1.5 million deaths a year are caused by acute respiratory infections from
breathing smoke from indoor cooking fires. Women and children are generally
exposed to the greatest levels of pollutants and it is children who suffer the
greatest health risk – respiratory infections are the leading cause of death of
young children worldwide.
Furthermore, many areas of the developing
world face massive environmental problems due to deforestation as almost half
the world’s timber harvest is burned for fuel.
Several
attempts have been made to introduce environmentally-friendly, cleaner cooking
alternatives such as solar cookers, fuel-efficient stoves and charcoal
briquettes made from paper. Solar cookers can be slower than traditional
stoves, may work only during limited hours on sunny days, and are often unable
to fry foods, which precludes them from being used to cook many traditional
dishes. Fuel-efficient stoves have started to be disseminated in regions
ranging from India to Sudan, but while they reduce the consumption of
wood-based or fossil fuels, they may not necessarily eliminate it. An effort to
produce briquettes from waste paper was introduced to reduce wood use, but initially
these briquettes can be difficult to use and they still produce a significant
amount of smoke. Furthermore, waste paper is not readily available in many
rural areas. For alternatives to traditional cooking to be met with better
success, they must prove to be affordable, effective and culturally acceptable.
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