{
  "id": 72203,
  "title": "Why are we (almost all) right-handed? Two million years of evolutionary mystery",
  "url": "https://urgent.news/2026/08/02/por-que-somos-casi-todos-diestros-dos-millones-de-anos-de-misterio",
  "topic": "business",
  "section": "Business",
  "published": "2026-08-02T03:30:00.000Z",
  "source": {
    "name": "El Pais",
    "slug": "el-pais",
    "url": "https://elpais.com/ideas/2026-08-02/por-que-somos-casi-todos-diestros-dos-millones-de-anos-de-misterio-evolutivo.html"
  },
  "original_language": "es",
  "account": "There's a number that neuroscientists have been looking at with fascination and perplexity for decades: 90. It's the percentage of humans who, in any culture, era studied and corner of the planet, preferentially use their right hand. That 90% is a figure so stable, so universal, so round and so strange that the question isn't even why left-handers exist. It's why there are so few of them, and in such a consistent way, in time and in space.",
  "summary": "No hay una sola causa, sino varias de ellas, entrelazadas. La hipótesis con más fuerza apunta al desarrollo de nuestro cerebro y al origen del lenguaje: los gestos",
  "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."
}