AI Summary

London’s low‑emission zone is reported to be effective, yet cities such as Barcelona and Bogotá face misinformation, political pressure and vested interests that hinder similar clean‑air measures. The piece notes that ten years ago Alastair Harper, then an advocate for young people’s health, was planning an air‑pollution campaign in London when he was interrupted by a phone call. No further details on outcomes or next steps are provided.

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