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Sooty Birds Share Dirt on Air Pollution [60 Second Specimens]

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Every specimen has a story; these dirty birds helped scientists answer questions about levels of air pollution in the United States over a period of 135 years.
More 60 Second Specimen stories:
Sources/Articles:
Bird specimens track 135 years of atmospheric black carbon and environmental policy:
The Dirty Secrets Saved in Dead Birds' Feathers -- New York Times
'Sooty birds' reveal hidden US air pollution -- BBC
Dirty birds show just how catastrophic air pollution used to be -- Washington Post
Thanks to Ben Marks and Shane DuBay for their help with this video!
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Created by:
Emily Graslie -- Brandon Brungard -- Sheheryar Ahsan
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This episode is filmed at and supported by The Field Museum in Chicago, Illinois.
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Category
Pet
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