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Airborne soot produced by wildfires and fossil-fuel combustion and transported to the remote McMurdo Dry Valleys of Antarctica contains levels of black carbon too low to contribute significantly to the melting of local glaciers, according to a new study. Strong winds in the Dry Valleys, however, can temporarily cause large spikes in the amount of locally produced black carbon, which is distributed through the ecosystem, the researchers found. [Source: National Science Foundation]
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