The ozone hole fluctuates in size every year due to natural meteorological variations, but no shrinking trend can yet be seen. However, scientists are confident the Montreal Protocol is working in the long-term, and could be used to limit super pollutants that contribute to global warming.
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The rule would achieve up to $280 billion in annual health benefits by preventing up to 34,000 premature deaths, 15,000 nonfatal heart attacks, 19,000 cases of acute bronchitis, 400,000 cases of aggravated asthma, and 1.8 million sick days a year beginning in 2014.
For the seventh day this month, Shanghai officials have warned children and the elderly to stay inside in a city where 24 hours exposed to the off-the-charts pollution would have hazardous consequences to one's health.