CHINA – Csatellite images speak volumes for human action on the environment. Published by Nasa, they show a drastic drop in pollution levels in China linked to the drop in activity, containment measures and plant closings caused by the epidemic of coronavirus, according to the US space agency.
These satellite imagess show the levels of nitrogen dioxide – a harmful gas emitted by motor vehicles and industrial installations – over the period from 1 to 20 January, when the epidemic had not yet spread as much; and between February 10 and 25, when residents were confined to their homes as much as possible and many of the factories were shut down.
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