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

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.

Sources/Articles: 

<a href="http://www.pnas.org/content/early/2017/10/04/1710239114">Bird specimens track 135 years</a> of atmospheric black carbon and environmental policy. 

The Dirty Secrets Saved in Dead Birds' Feathers -- <a href="http://www.nytimes.com/2017/10/10/science/birds-air-pollution.html">New York Times</a> 

'Sooty birds' reveal hidden US air pollution -- <a href="http://www.bbc.com/news/science-environment-41557157">BBC</a> 

Dirty birds show just how catastrophic air pollution used to be -- <a href="https://www.washingtonpost.com/news/speaking-of-science/wp/2017/10/09/soot-caught-in-bird-feathers-shows-how-catastrophic-air-pollution-can-be/?noredirect=on&utm_term=.40d8b7c17133">Washington Post</a>

Thanks to Ben Marks and Shane DuBay for their help with this video!&nbsp;

More&nbsp;<a href="https://www.youtube.com/playlist?list=PLL8_5VpX9Txpke4mWgBrsHVgNLeunW-XY">60</a> <a href="https://www.youtube.com/playlist?list=PLL8_5VpX9Txpke4mWgBrsHVgNLeunW-XY">Second Specimen stories</a>