1. Air quality has improved dramatically in rich countries over the past century. 2. Yet air pollution is still a huge problem - especially inthe developing world.(c)Moreover - more efficient stoves would on average save about 30% fuel - which translates into a saving of upto $57 per household per year - and at the same time make cooking more efficient and less time consuming. 4. It kills about 7 million people each year - accounting for one out of every eight deaths globally. 5. In India - it now kills 1. 6 million people each year or one of six deaths.