Air pollution levels have improved in Europe over 20 years, say researchers
Air pollution levels have improved in Europe over 20 years, say researchers
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Air pollution levels have improved in Europe over 20 years, say researchers
Air pollution levels have improved in Europe over the past 20 years, research has found.
About 98% of Europeans live in areas the WHO says have unhealthy levels of small particles known as PM2.5, 80% for larger ones known as PM10, and 86% for nitrogen dioxide.