PNAS in the News

Hints of ayahuasca in pre-Columbian rituals

Chemical evidence suggests ritual use of psychoactive plants used to brew ayahuasca in pre-Columbian Bolivia.

Image courtesy of Juan Albarracin-Jordan and José M. Capriles.

National Geographic ●  Science ●  PNAS Article

Kinship and violence in Neolithic Poland

Researchers present evidence of Neolithic kinship and violence based on remains from a mass grave in Poland.

Image courtesy of Piotr Włodarczak.

Newsweek ●  Science ●  PNAS Article

Brain fluid shifts following spaceflight

Volume of cosmonauts’ brain ventricles increased by an average of 12% after spaceflight—a potential mechanism to cope with increased brain fluid volume, a study suggests.

Image courtesy of R. Maxine Rühl.

Inverse ●  New Scientist ●  PNAS Article

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Teaching Resources in PNAS

As a world-class multidisciplinary research journal, PNAS offers a wealth of content—from Core Concepts articles that explain a trending topic in a given field, to the ability to quickly download figures and tables for PowerPoint slides—that will enhance course curricula and encourage classroom discussion. These informative resources are collected here in the PNAS Teaching Resources Portal.