"noscript"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
Intact ecosystems have a big role in sequestering carbon. Hence, safeguarding the biosphere from further degradation is an existential challenge for humanity.
Image credit: Shutterstock/Kritskiy-ua.
This correlation of heart rates could one day lead to new tools for measuring attentiveness, both in the classroom and the clinic.
Image credit: Shutterstock/Alhovik.
People are increasingly dividing themselves into social and political factions. Models can hint at how it happens—and maybe offer ways to mitigate it.
Image credit: Dave Cutler (artist).
In the News
Plain-tailed wrens coordinate with each other to sing duets by inhibiting motor circuits in the brain.
Image credit: Melissa J. Coleman.
While humans and Eurasian jays are susceptible to illusions using fast movements, jays are more influenced by observable than expected motions.
Image credit: Elias Garcia-Pelegrin.
Minimizing building lighting at night could significantly reduce collision rates of nocturnally migrating birds.
Image credit: Ian Davies (Cornell University, Ithaca, NY).
Sign up for Article Alerts
Science Sessions Podcasts
Sarah Chambliss discusses racial and ethnic disparities in exposure to air pollutants.
Image credit: Pixabay/sueegeneris.
Featured Profile
Profile of NAS member and evolutionary biologist Scott Edwards
Image credit: Scott Edwards.