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Colour-changing bench detects dirty air

Wednesday, May 01, 2019 - 01:32

Two coal miners in southern Poland are fighting air pollution with specially designed benches which detect and purify dirty air. Matthew Stock reports.

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Two coal miners in southern Poland are fighting air pollution with specially designed benches which detect and purify dirty air. Matthew Stock reports.

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Colour-changing bench detects dirty air

Wednesday, May 01, 2019 - 01:32