Air pollution in northeast US dropped 30 percent amid the coronavirus

Air pollution over the northeast region of the US has declined as millions living in the area are forced into lockdown to limit the spread of the coronavirus. NASA satellite images show a 30 percent reduction in atmospheric nitrogen dioxide compared with the same period last year. The pollution stems from the burning of fuel and emissions of vehicles and power plants, and because the lockdowns have closed businesses and left streets empty, air quality has improved

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