گزارش روزانه: دندان های اسکلت شواهدی از اولین استفاده از مواد مخدر را نشان می دهد

Daily briefing: Skeleton teeth show evidence of the earliest known habitual drug use

Nature, Published online: 11 September 2026; doi:10.1038/d41586-026-02901-x Traces of the psychoactive compound arecoline suggest that two people regularly sucked on psychoactive betel nuts. Plus, what motivates people to take action on climate change and the promise of nasal vaccines.