PNAS in the News

California fires, precipitation, and jet stream

Simulations of future California climate suggest that under high CO2 conditions, by the late 21st century, increasing temperatures could lead to reduced snowpack, drier summers, and increased fire risk, independent of changes in winter precipitation.

Controlled burn in mixed conifer forest near Glenbrook, Lake Tahoe. Image courtesy of Alan H. Taylor.

BBC ●  Newsweek ●  PNAS Article

Mapping past Solar System dynamics

Researchers report a system for obtaining information about planetary motions approximately 200 million years ago, and the system could help constrain models of Solar System evolution and provide tests of gravitational models.

Natural cast of a Eubrontes giganteus footprint from very shallow water lake sediments of the Hartford Basin at Dinosaur State Park, Rocky Hill, Connecticut. Image courtesy of Paul E. Olsen.

                                                             Discover ●  Smithsonian ●  PNAS Article

Twins and prenatal testosterone exposure

Compared with female co-twins not exposed to a male co-twin inside the uterus, female co-twins exposed to a male co-twin had 15.2% higher probability of dropping out of high school, 8.6% lower earnings at age 32, and 5.8% fewer children, according to a study.

Prenatal testosterone exposure is tied to long-term socioeconomic traits. Image courtesy of iStock/Avril Morgan.

NY Times ● Science ●  PNAS Article


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.


Apr 16, 2019
Canonical URL: Profile of Zhisheng An
Apr 15, 2019
Mar 26, 2019
Canonical URL: Profile of Paul E. Olsen
Mar 04, 2019


Parenting and STEM careers
Erin Cech discusses parenting and gender disparities among STEM professionals. Image courtesy of Pixabay/Clker-Free-Vector-Images.