{
  "$type": "site.standard.document",
  "bskyPostRef": {
    "cid": "bafyreihabe7h3cm4k3xcbctlssxzpuhhghyxgfo7sx7btwph5ttkrc4zbm",
    "uri": "at://did:plc:5v5xdyhb3zf74bcdmcnazkrk/app.bsky.feed.post/3mfkqmymeol52"
  },
  "coverImage": {
    "$type": "blob",
    "ref": {
      "$link": "bafkreifz2bxle6b2imopxatnwkio2e6lksgiaptfh4yd7esjijnsg5divm"
    },
    "mimeType": "image/jpeg",
    "size": 46824
  },
  "path": "/science/news-science/why-humans-have-chins/",
  "publishedAt": "2026-02-23T13:19:56.000Z",
  "site": "https://www.zmescience.com",
  "tags": [
    "Biology",
    "News",
    "chin",
    "human chin",
    "human chin evolution",
    "natural selection"
  ],
  "textContent": "Your chin might just be an evolutionary side effect of the human face shrinking over millions of years.",
  "title": "The Mystery of Why Only Humans Have Chins May Finally Have an Answer — And It’s Not What You’d Expect"
}