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What soot-covered, hundred-year-old birds can tell us about saving the environment

20:00 EDT 8 Oct 2017 | AAAS

(Field Museum) Birds in museum collections from Rust Belt cities around the turn of the century are covered with black soot from air pollution at the time. Scientists have compared the amount of soot on birds through the years to track envioronmental pollution over the last 135 years.

Original Article: What soot-covered, hundred-year-old birds can tell us about saving the environment

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