Cars were dirtier but I think there were fewer. | Hacker News

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2OEH8eoCRo0 on July 22, 2025 | parent | context | favorite | on: Many lung cancers are now in nonsmokers

Cars were dirtier but I think there were fewer.

asdff on July 22, 2025 [–]

Just look at old photos of city smog in the 1960s. It is night and day different compared to air today even with larger populations in these same metros in some cases.

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