Polish town tests anti-smog sound ‘cannon’ to tackle pollution
Poland is one of the most polluted countries in Europe, breaching EU norms by hundreds of percentage points at the worst times of year. READ MORE : https://www.euronews.com/2022/01/21/polish-town-tests-anti-smog-sound-cannon-to-tackle-pollution Subscribe to our channel: https://www.youtube.com/c/euronews?sub_confirmation=1
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