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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
Launched in 1977, Voyagers 1 and 2 are still helping to resolve past controversies even as they help spark a new one: the true shape of the heliosphere.
Image credit: NASA/JPL-Caltech.
Heavy hydrogen makes heavy water more dense and raises its boiling point. It also appears to affect another characteristic long rumored: taste.
Image credit: Shutterstock/sl_photo.
Recent experiments and simulations are starting to answer some fundamental questions about how life came to be.
Image credit: Shutterstock/Radoslaw Lecyk.
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.
