Published 1 day ago • loading... • Updated 1 day agoShow Less IconAncient Teeth Pose a Mystery: What Made Those Strange Grooves? Researchers found chemical traces and tooth wear that suggest hunter-gatherers used betel nuts for their stimulant and painkilling effects.Summary by NprNew 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.Share menu4 Articles4 ArticlesAllLeft2Center1RightSearch IconSort IconKPBSnprLean LeftView articleCaret Right IconGeorgia Public BroadcastingLean LeftView articleCaret Right Iconksfr.orgView articleCaret Right Icon+3 Reposted by 3 other sourcesCenterFactualityOwnershipAncient 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.1 day ago·San Diego, United StatesRead Full ArticleThink freely.Subscribe and get full access to Ground NewsSubscriptions start at $9.99/yearSubscribeCoverage DetailsTotal News Sources4Leaning Left2Leaning Right0Center1Last Updated1 day agoBias Distribution67% LeftBias Distribution Too Big Arrow IconToo Big Arrow IconCaret Up Icon67% of the sources lean Left67% LeftL 67%C 33%Untracked biasFactuality Info IconTo view factuality data please Upgrade to PremiumOwnership Info IconTo view ownership data please Upgrade to Vantagenpr broke the news in Washington, United States 1 day ago on Saturday, September 19, 2026.Too Big Arrow IconCaret Down IconSources are mostly out of (0)Similar News TopicsArchaeology Plus IconAtlanta, Georgia Plus IconShow AllSimilar News TopicsArchaeology Plus IconAtlanta, Georgia Plus IconShow All