Humans are the only primates with a chin – now we finally know why

12:00 - 16 Feb 2026
www.newscientist.com
Biologists have debated the reason why Homo sapiens evolved a prominent lower jaw, but this unique feature may actually be a by-product of other traits shaped by natural selection
https://www.newscientist.com/article/2515693-humans-are-the-only-primates-with-a-chin-now-we-finally-know-why/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home

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