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PNAS commits to immediately and freely sharing research data and findings relevant to the novel coronavirus (COVID-19) outbreak.
See the free collection of PNAS coronavirus papers and learn more about our response to COVID-19.
See the free collection of PNAS coronavirus papers and learn more about our response to COVID-19.
Front Matter
Vaccination efforts must be coupled with aggressive community-based COVID point-of-care testing so that cases of asymptomatic infection are rapidly identified.
Image credit: Shutterstock/zstock.
The ferns appear to demonstrate a division of labor, implying complex social organization.
Image credit: Ian Hutton.
For years, STEM programs have tried to attract Black grads and undergrads. A new push to retain these students has seen some success, but serious challenges remain.
Image credit: Dave Cutler (artist).
In the News
Analyses of ancient dog DNA suggest that dogs were likely domesticated from Eurasian wolves around 23,000 years ago, possibly in Siberia.
Image credit: Pixabay/Chiemsee2016.
Pollen seasons have lengthened by 20 days and pollen concentrations have increased by 21% from 1990 to 2018 in North America, and anthropogenic climate change is a likely factor.
Image credit: William R. L. Anderegg.
Conservation efforts must be better coordinated across national borders, and the impacts of border barriers on species must be mitigated as the climate changes.
Image credit: Stephen G. Willis.
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Science Sessions Podcasts
Vinay Pathak describes when and where HIV sheds its capsid coating while infecting human cells.
Featured Profile
Profile of Dolph Schluter
Image credit: The Department of Zoology at the University of British Columbia/Sylvia Heredia.
