To make this tasty meal of beans and ugali...
A lady cooks on a three-stone fire. This type of fire burns through firewood too quickly. So she and her children spend more time collecting firewood than they do enjoying their beans and ugali.
But more importantly, when used without good ventilation inside a house, three-stone fires produce harmful burnt particles and carbon monoxide. The World Health Organization says that about 1.5 million people die each year from lung diseases as a result of pollutants from burning firewood.
