When people talk about air pollution, they are usually thinking about outdoor air 1. But do you know that there is also air pollution inside homes, offices, hotels and other buildings? The air in your home can be 2 to 100 times more polluted than the air outdoors! In fact, some American doctors say that 50% of the illnesses have 2 to do with the polluted indoor air. A lot of pollution comes from indoor activities 3 smoking and cooking. As most people 4 about 80%—90% of their time inside buildings, it is important to take indoor air pollution seriously, too. Air pollution influences our health 5. When the air is polluted, not only young children and old people 6 from it, 7 people without health problems suffer as well. Indoor air pollution can 8 people's eyes, noses and throats. Air pollution, both indoor and outdoor, can also 9 to lung cancer and heart disease! In the Great London Fog in 1952, 4000 people died in a few days 10 the pollution! It is said that half a million young children and women die each year in India because of indoor air pollution!
