Beijing's official air quality index reached a maximum level of 500 on Sunday morning, with floating particles known as PM10 surpassing 2,000 micrograms per cubic metre in some districts.
from World News Headlines, Latest International News, World Breaking News - Times of India https://ift.tt/39oRogO
from World News Headlines, Latest International News, World Breaking News - Times of India https://ift.tt/39oRogO
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