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Deaths associated with anaesthesia

Scientists believe they have found the earliest biochemical evidence of people chewing the popular psychoactive plant Key takeaways: Ancient betel nut use Scientists analyzed preserved dental plaque from a woman at a 4,000-year-old burial site and said they found evidence of betel nut use

PMID 34590373

Butterflies and native bees collected salts on wet sediments, velvet ants moved rapidly across disturbed soils, and dragonflies patrolled the project perimeter

doi: 10.3389/fendo.2017.00023 Received 24 October 2016 Accepted 25 January 2017 Published 10 February 2017 Volume 8 - 2017 Edited by Toru Hosoi, Hiroshima University, Japan Reviewed by Maristela Oliveira Poletini, Universidade Federal de Minas Gerais, Brazil