BP can be read as "Before Pollution by airborne radioactive isotopes made radioc... | Hacker News

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		Iv on Dec 16, 2019 \| parent \| context \| favorite \| on: 4.2 Kiloyear Event BP can be read as "Before Pollution by airborne radioactive isotopes made radiocarbon dating unusable"

philipov on Dec 17, 2019 [–]

or "British Petroleum"

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