
Researchers said the NO2 decreases were likely the result of less traffic as more people worked at home and drove less.
from WebMD Healthhttps://img.webmd.com/dtmcms/live/webmd/consumer_assets/site_images/article_thumbnails/other/generic_air_quality_map_2_other/650x350_generic_air_quality_map_2_other.jpg https://ift.tt/30xiME2
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