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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
The process presents big legal, logistical, ethical, political, financial, and architectural challenges.
Image credit: Shutterstock/Andy Levin.
The approach is finding increasing use in scientific and medical fields as a way to explore the possible consequences of technological development.
Image credit: “Ocean back from the Brink” image reproduced with the permission of the Radical Ocean Futures Project, Stockholm Resilience Centre. Copyright, Simon Stålenhag.
Production taxes and remote sensing techniques would help address the problem.
Image credit: Shutterstock/Leonid Ikan.
In the News
A study suggests an unusual mode of reproduction in swamp wallabies, which may be continuously pregnant throughout their reproductive lives.
Image credit: Geoff Shaw (University of Melbourne, Melbourne, Australia).
A study finds that the dilution of nutrients in plants, alongside climate factors, drives insect herbivore decline.
Image credit: Ellen A. R. Welti.
Limited nuclear war between India and Pakistan could lead to global food insecurity, according to a study.
Image credit: Wikimedia Commons/US Department of Energy.
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Science Sessions Podcasts
Ellen Welti explains how grasshoppers in a Kansas prairie could be in decline even with abundant grass.
Featured Profile
Profile of NAS member and physicist Paul L. McEuen
Image credit: Susan Wiser (photographer).
