As people stay home, Earth turns wilder and cleaner. These before-and-after images show the change. - Eagle Point Solar

As people stay home, Earth turns wilder and cleaner. These before-and-after images show the change.

As people stay home, Earth turns wilder and cleaner. These before-and-after images show the change.

The air from Boston to Washington is its cleanest since a NASA satellite started measuring nitrogen dioxide,in 2005, says NASA atmospheric scientist Barry Lefer.


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