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Eyes in the Sky Zoom in on Local Polluters

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The era of the drone is here. Remotely operated vehicles on the ground and in the sky offer the opportunity to see things in a new light or from vantage points that were impossible just a decade ago. In Poland, drones are being deployed as the winter sets in, to try to pinpoint potential sources of pollution in an effort to keep city air clean. VOA's Kevin Enochs reports.

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