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Dirty bird carcasses tell the story of how air pollution has improved in the last 100 years

What soot-covered, hundred-year-old birds can tell us about saving the environment Museum collections track soot in the atmosphere throughout the 20th century From the FIELD MUSEUM Horned Larks are cute little songbirds with white bellies and yellow chins–at least, now they are. A hundred years ago, at the height of urban smoke pollution in the…

...[READ MORE]   SOURCE: Watts Up With That

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