News tagged with nitrogen pollution

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Paving slabs that clean the air

The concentrations of toxic nitrogen oxide that are present in German cities regularly exceed the maximum permitted levels. That’s now about to change, as innovative paving slabs that will help protect the ...

Aug 11, 2010
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Report: Most Americans still live in unclean air

(AP) -- Six in 10 Americans - about 175 million people - are living in places where air pollution often reaches dangerous levels, despite progress in reducing particle pollution, the American Lung Association said in a report ...

Apr 28, 2010
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