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  "path": "/chemistry/science-history-carbon-14-is-discovered-opening-a-window-into-past-civilizations-feb-27-1940",
  "publishedAt": "2026-02-27T07:00:00.000Z",
  "site": "https://www.livescience.com",
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  "textContent": "Martin Kamen and Samuel Ruben's discovery of the radioactive isotope carbon-14 in 1940 helped usher in a new era of dating artifacts from past civilizations.",
  "title": "Science history: Carbon-14 is discovered, opening a window into past civilizations — Feb. 27, 1940",
  "updatedAt": "2026-02-24T16:09:21.000Z"
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