News tagged with pollution levels

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Air quality worsening in world's cities

Most city dwellers around the world are exposed to air pollution levels that are considered unsafe, and the situation is getting worse, according to a World Health Organization report Wednesday.

May 07, 2014
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The world's most polluted cities

Paris has leapt into the headlines over an alert for dangerous atmospheric particles, yet it does not ordinarily count among the world's most polluted cities. ...

Mar 17, 2014
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