London’s low emission zone is working – so why are cities around the world so cautious about clean air?
Similar initiatives have been launched from Barcelona to Bogotá, but they have misinformation, political pressure and vested interests stacked against them Ten years ago, Alastair Harper was an advocate for young people’s health sitting in a stuffy meeting room in London planning an air pollution campaign. “My phone started buzzing,” he said. “I took the call, and then told the room I needed to leave immediately. “I
Open original article- Ledger record
- #2010
- First seen
- 23 Aug 2026, 17:38 UTC
- Last checked
- 24 Aug 2026, 07:09 UTC
- Version history
- 1 version
- Current fingerprint
d9f21774a4bd...f3a14f
Publisher layer
Recorded article metadata
- Publisher
- The Guardian
- Country
- England / United Kingdom
- Source published
- 23 Aug 2026, 07:00 UTC
- Source updated
- No update timestamp supplied
- Byline
- Fiona Harvey Environment editor
- Section
- Low emission zones
Similar initiatives have been launched from Barcelona to Bogotá, but they have misinformation, political pressure and vested interests stacked against them Ten years ago, Alastair Harper was an advocate for young people’s health sitting in a stuffy meeting room in London planning an air pollution campaign. “My phone started buzzing,” he said. “I took the call, and then told the room I needed to leave immediately. “I
Change layer
Observed version timeline
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1
London’s low emission zone is working – so why are cities around the world so cautious about clean air?
Similar initiatives have been launched from Barcelona to Bogotá, but they have misinformation, political pressure and vested interests stacked against them Ten years ago, Alastair Harper was an advocate for young people’s health sitting in a stuffy meeting room in London planning an air pollution campaign. “My phone started buzzing,” he said. “I took the call, and then told the room I needed to leave immediately. “I
Changed fieldstitlebylinedescriptionTextcontentTextsourcePublishedAtsourceUpdatedAtsectionimageUrltags- Version SHA-256
d9f21774a4bd...f3a14f- Capture SHA-256
cd7051ea5c9e...76db91
Interpretation layer
Labels with declared origins
Publisher categories are copied from source metadata. Machine signals report observable wording or format and do not determine truth, intent, ethics, or wrongdoing.
- machine content-type Reported news observable-rules-v1 / 70% rule confidence
- publisher category Air pollution rss-category
- publisher category Environment rss-category
- publisher category Health rss-category
- publisher category London rss-category
- publisher category Low emission zones rss-category
- publisher category Pollution rss-category
- publisher category Road transport rss-category
- publisher category Society rss-category
- publisher category UK news rss-category
- publisher category World news rss-category
Public response layer
Reception snapshots
Comment counts and samples remain absent until a lawful, source-specific capture method is reviewed. Absence is recorded instead of estimated.
Evidence layer
Capture provenance
- Capture ID
- #1688
- Observed
- 23 Aug 2026, 17:38 UTC
- HTTP result
- 200 / parsed
- Raw payload
- 475,322 bytes, private gzip evidence
- Collector
- news-ledger/0.1
- Public boundary
- metadata and excerpt