COVID-19 cleared the skies but also supercharged methane emissions

Ars Technica
By Jacek KrywkoFeb 6, 2026, 4:05 pm192 pts
In the spring of 2020, as the COVID-19 pandemic brought global industry and travel nearly to a halt, satellite sensors recorded a dramatic plunge in nitrogen dioxide, a byproduct of internal combustion engines and heavy industry. For a moment, the world’s air was cleaner than it had been in decades. But then…

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