Exposure to ozone, the main ingredient in smog—even at levels below federal safety standards—may increase the risk of going into
Smog exposure linked to higher risk of cardiac arrest

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Exposure to ozone, the main ingredient in smog—even at levels below federal safety standards—may increase the risk of going into
Mongolians drink ‘oxygen cocktails’ and ‘lung tea’ to cope with air pollution that is more than 130 times above safe