The following appeared in a letter to an editor.
"In many countries, wood is the primary fuel used for heating and cooking, but wood smoke can cause respiratory and eye problems, and extensive use of wood causes deforestation, a major environmental problem. In contrast, charcoal, made by partially burning wood in a controlled process, is a fuel that creates less smoke than wood does. Moreover, although charcoal costs slightly more than wood, less charcoal is needed to produce the same amount of heat. Therefore, people who use wood as their primary fuel can, without experiencing economic hardship, switch to charcoal and can thereby improve their health and preserve the environment."
