Ancient teeth pose a mystery: What made those strange grooves?
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. (Image credit: Claire Harbage/NPR)
ImpactNotable 33/100
Why it mattersRule-based estimate: no strong signals; trust 8/10.
RegionsUnited States
Published2 h ago (Sat, 19 Sep 2026 11:21:56 GMT)
RetrievedSat, 19 Sep 2026 12:00:13 GMT via rss
ClassifiedSat, 19 Sep 2026 12:00:20 GMT by heuristic
AuthorPien Huang