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Submission + - Cars Emit More Black Carbon Than Thought->

LilaG writes: Gasoline-burning engines put out twice as much black carbon as was previously measured, according to new field methods tested in Toronto. The tiny particles known as black carbon pack a heavy punch when it comes to climate change, by trapping heat in the atmosphere and by alighting atop, and melting, Arctic ice. With an eye toward controlling these emissions, researchers have tracked black carbon production from fossil fuel combustion in gasoline-burning cars and diesel-burning trucks. Until this study was published, gas-burning vehicles had been thought to be relatively minor players.
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Cars Emit More Black Carbon Than Thought

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