China uses drones to detect polluting factories: http://economictimes.indiatimes.com/news/environment/pollution/china-uses-drones-to-detect-polluting-factories/articleshow/47332399.cms … via @EconomicTimes
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China uses drones to detect polluting factories: http://economictimes.indiatimes.com/news/environment/pollution/china-uses-drones-to-detect-polluting-factories/articleshow/47332399.cms … via @EconomicTimes