The Danger of Incomplete Combustion for Environment, Health, and ...

Biomass Cooking in History• Only quite recently in human history did more than halfof households use non-solid fuels for cooking – perhapsaround 1980.• Today, ~43% use solid fuels, about 3 billion people• Although the percentage is dropping, the absolutenumber is still rising.• Perhaps 20 million people a year are added to the totaleach year.• Indeed, there are more people using solid fuels today forcooking than the total world population in 1950• Or any year previously