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What’s the mystery source of two potent greenhouse gases? The trail leads to Asia

Employees walk through an aluminium smelting room

An aluminium smelter in Zouping, China. Two greenhouse gases whose atmospheric levels have soared in recent years have been traced to such smelters and to semiconductor factories in Japan and South Korea. Credit: Brent Lewin/Bloomberg/Getty

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Nature 596, 464 (2021)




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