"With the current levels of air pollution, many people [are getting] sick. We know that lowering air pollution levels reduces these numbers,” said Mark Nieuwenhuijsen, director of the Barcelona Institute for Global Health (ISGlobal).

  • megrania
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    1 year ago

    They only work with the windows closed, unfortunately … which, depending where you live, means you’d also need AC, which might spike up your electricity bill, etc …