New Research In
Physical Sciences
Featured Portals
Articles by Topic
Biological Sciences
Featured Portals
Articles by Topic
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
Along with bragging rights, the nations that achieve exascale computing early will have a leg up in the scientific revolutions of the future.
Image credit: Flickr/Oak Ridge National Laboratory, licensed under CC BY 2.0.
Serious efforts must be made to decrease the scale of their use.
Image credit: Shutterstock/lantapix.
Researchers are starting to probe the details of human breath and skin emissions in great detail—the results could have practical implications.
Image credit: Mikal Schlosser (photographer).
In the News
A study examines the demographic and evolutionary history of extinct and living lions.
Image credit: Pixabay/Sponchia.
Researchers examine how Atacama Desert microbes have adapted to parched environments and use rocks as a water source.
Image credit: Jocelyne DiRuggiero.
A study finds that airborne droplets produced through speech could be a significant mode of COVID-19 transmission.
Image credit: Valentyn Stadnytskyi.
Sign up for Article Alerts
Science Sessions Podcasts
Clark Larsen describes the costs of urban life in a Neolithic city.
Featured Profile
Profile of NAS member and ecologist James R. Ehleringer
Image credit: Dave Titensor (The University of Utah, Salt Lake City, UT).
