{
  "id": 5439404,
  "title": "Iron helped scientists trace Earth's oxygen. Now it's telling a bigger story",
  "url": "https://urgent.news/2026/09/03/iron-helped-scientists-trace-earths-oxygen-now-its-telling-a-bigger",
  "topic": "science",
  "section": "Science",
  "published": "2026-09-03T22:30:05.000Z",
  "source": {
    "name": "Phys.org",
    "slug": "phys-org",
    "url": "https://phys.org/news/2026-09-iron-scientists-earth-oxygen-bigger.html"
  },
  "original_language": "en",
  "account": null,
  "summary": "For decades, scientists have studied iron preserved in ancient rocks to reconstruct how Earth's oceans and atmosphere became rich in oxygen. A new study suggests iron has recorded other major transformations too.",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}