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  "path": "/releases/2026/02/260218031609.htm",
  "publishedAt": "2026-02-18T03:50:31.000Z",
  "site": "https://www.sciencedaily.com",
  "textContent": "Life on Earth may have learned to breathe oxygen long before oxygen filled the skies. MIT researchers traced a key oxygen-processing enzyme back hundreds of millions of years before the Great Oxidation Event. Early microbes living near oxygen-producing cyanobacteria may have quickly used up the gas as it formed, slowing its rise in the atmosphere. The results suggest life was adapting to oxygen far earlier — and far more creatively — than once thought.",
  "title": "Ancient microbes may have used oxygen 500 million years before it filled Earth’s atmosphere"
}