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  "path": "/ancient-hot-springs-reveal-how-life-survived-on-a-toxic-early-earth/",
  "publishedAt": "2026-03-04T06:48:26.000Z",
  "site": "https://scitechdaily.com",
  "tags": [
    "Biology",
    "Microbes",
    "Microbiology"
  ],
  "textContent": "Iron-fueled microbes helped life survive Earth’s toxic, oxygen-free beginnings. Our planet did not always resemble the blue and green world we know today. In its distant past, atmospheric oxygen levels were roughly a million times lower than they are now. There were no forests, no animals, and none of the familiar life forms that depend [...]",
  "title": "Ancient Hot Springs Reveal How Life Survived on a Toxic Early Earth"
}