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  "path": "/releases/2026/02/260210040559.htm",
  "publishedAt": "2026-02-10T09:42:37.000Z",
  "site": "https://www.sciencedaily.com",
  "textContent": "Human evolution has long been tied to growing brain size, and new research suggests prenatal hormones may have played a surprising role. By studying the relative lengths of index and ring fingers — a clue to oestrogen and testosterone exposure in the womb — researchers found that higher prenatal estrogen was linked to larger head size in newborn boys.",
  "title": "Scientists find a clue to human brain evolution in finger length"
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