It is cool: DRONES TO MONITOR RISING EMISSIONS FROM SHIPPING
Hong Kong is gearing up to use drones to monitor emissions from ships.
Highly efficient sensors developed after a series of extensive trials have been fitted on the drones. In real time, they accurately measure the pollution content present in the smoke plume released by a ship.
When equipped, the drones, developed by a team of researchers from the Hong Kong University of Science and Technology (HKUST), scan emissions by hovering over ships for just two minutes.
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Source: https://ienv.ust.hk/news/cgtn-drones-monitor-rising-emissions-shipping