Ancient teeth pose a mystery: What made those strange grooves?

Source: nprNews September 19, 2026 · 04:21
Ancient teeth pose a mystery: What made those strange grooves?
From the publisher
New research on ancient human remains suggests the habitual usage of betel nuts, a plant seed with mind-affecting properties that is popular in parts of Asia despite the health risks it presents.

The original article opens on the publisher's website.

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