Air pollution kills between 7 million and 9 million people each year; that is six or seven times the death toll from traffic accidents and hundreds of times the death toll from war or terrorism or all natural disasters combined. It is deadliest where people cook by burning wood or charcoal and farm by burning the end of the last season’s crops. That is to say, it is deadliest where people are energy poor, because where people are energy poor, they burn fuel and breathe in the byproducts.
