The Wall Street Journal
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Vest-Wearing Pigeons Monitor Air Pollution in London
Posted
March 17, 2016
Views
2,230
Likes
20
Comments
5
Engagement
March 17, 2016
2,230
20
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1.12%
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1:22Now PlayingLondon's first ever flock of pollution-monitoring pigeons is gathering data high above the city. Mark Kelly reports.
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