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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
Recent experiments and simulations are starting to answer some fundamental questions about how life came to be.
Image credit: Shutterstock/Radoslaw Lecyk.
Archaeologists have long tried to define the transition between the two time periods.
Image credit: Ceri Shipton.
Researchers are exploring whether these ubiquitous fluorinated molecules might worsen infections or hamper vaccine effectiveness.
Image credit: Shutterstock/Dmitry Naumov.
In the News
A study finds that giant pandas roll in horse manure to increase their cold tolerance.
Image credit: Fuwen Wei.
Researchers report evidence of exotic foods in the Near East from the 2nd millennium BCE, suggesting trade networks with South Asia.
Image credit: The Meggido Expedition.
A collection of studies documents patterns of insect decline, raising concerns about insects’ future in a world altered by human activities.
Image credit: Pixabay/winterseitler.
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Science Sessions Podcasts
Jonathon Yuly, David Beratan, and Peng Zhang investigate how electron bifurcation reactions work.
Featured Profile
Profile of NAS member and geneticist Haig Kazazian Jr.
Image credit: Courtney J. Barbour.