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Podcast: Sensemaker
Episode: Ep 648: Do clean air zones work?
Description: A by-election result on the outskirts of London has turned London’s Ultra Low Emissions Zone into a political football, but does it improve air quality?For the premium Tortoise listening experience, curated by our journalists, download the free Tortoise audio app.For early and ad-free access, subscribe to Tortoise+ on Apple Podcasts.If you’d like to further support slow journalism and help us build a different kind of newsroom, do consider donating to Tortoise at tortoisemedia.com/support-us. Your contributions allow us to investigate, campaign and explore, and to b...