London’s PM2.5 Pollution Levels Are Above Safe Limits

Over 100 years after “London Fog,” is London’s air safe? I just analyzed data on London’s PM2.5 air pollution—tiny particles in the air measuring 2.5 microns and below. In 2018, London averaged 12 micrograms of PM2.5, that’s higher than the World Health Organisation annual limit.   What Does That Mean? Based … Read more

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