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Air contaminated with pollutants such as ozone and tiny particles could cause the premature death of about 6.6 million people a year by 2050 if nothing is done to improve air quality, scientists have warned. In a new study, they found that outdoor air pollution already kills about 3.3 million people a year worldwide. The majority of those deaths are in Asia where residential energy emissions, such as those from heating and cooking, have a major impact. And that toll could double over the next 35 years, the researchers warned, unless clean-up measures are taken. [Source: CNN Phillipines]
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