Mar 17, 2016 - 09:27 am

Pigeon patrol.

In London, a “fleet” of flying air quality controllers has taken to the skies. Ten pigeons carry light backpacks collecting air pollution data and tweeting it back – digitally, not literally. Follow @PigeonAir for updates on the flight.
treehugger.com, twitter.com

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Found on electrive.com
https://www.electrive.com/2016/03/17/pigeon-patrol/
17.03.2016 09:37