BBC News |
'Sooty birds' reveal hidden US air pollution
BBC News Soot trapped in the feathers of songbirds over the past 100 years is causing scientists to revise their records of air pollution. US researchers measured the black carbon found on 1,300 larks, woodpeckers and sparrows over the past century. They've ... Soot caught in bird feathers shows how catastrophic air pollution can be What Sooty Feathers Tell Us About Air Pollution Over Time Dirty Birds Are Refining Climate Models |
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