The Proceedings of the National Academy of Sciences of the United States of America, usually referred to as PNAS, is the official journal of the United States National Academy of Sciences (NAS). PNAS is an important scientific journal that printed its first issue in 1915 and continues to publish highly cited research reports, commentaries, reviews, perspectives, feature articles, profiles, letters to the editor, and actions of the Academy. Coverage in PNAS broadly spans the biological, physical, and social sciences. Although most of the papers published in the journal are in the biomedical sciences, PNAS recruits papers and publishes special features in the physical and social sciences and in mathematics. PNAS is published weekly in print, and daily online in PNAS Early Edition. PNAS was established by NAS in 1914, with its first issue published in 1915. The NAS itself had been founded in 1863 as a private institution, but chartered by the US Congress, with the goal to "investigate, examine, experiment, and report upon any subject of science or art." By 1914, the Academy was well established.
Owners of thoroughbred stallions carefully breed prizewinning horses over generations to eke out fractions of a second in million-dollar races. Materials scientists have taken a page from that playbook, turning to the power ...
Superconductivity
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Using cutting-edge theoretical calculations performed at NERSC, researchers at Berkeley Lab's Molecular Foundry have predicted fascinating new properties of lithium—a light alkali metal that has intrigued scientists for ...
General Physics
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President Donald Trump recently introduced immigration reforms that would prioritize education and employment qualifications over family connections in selecting immigrants and nominated immigration hard-liner Kris Kobach ...
Social Sciences
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Photosynthesis makes our atmosphere oxygen-rich and forms the bedrock of our food supply. But under changing or stressful environmental conditions, the photosynthetic process can become unbalanced, resulting in an excess ...
Biotechnology
May 23, 2019
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Orcas live in stable, structured social groups. And their survival directly depends on it, as a CNRS and University of La Rochelle research team has just demonstrated. Between 1996 and 2002, half of the Crozet Islands orca ...
Ecology
May 23, 2019
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Inside all of us are trillions of tiny molecular nanomachines that perform a variety of tasks necessary to keep us alive.
Nanomaterials
May 22, 2019
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Researchers may be able to improve corn yields and nutritional value after discovering genetic regulators that synthesize starch and protein in the widely eaten grain, according to a Rutgers-led study.
Biotechnology
May 22, 2019
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Our genetic code is stored in chromosomes that are composed of DNA (deoxyribonucleic acid). To make sure the genetic code is maintained accurately in all the cells, our cells must replicate precisely and distribute its chromosomes ...
Cell & Microbiology
May 22, 2019
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There's no doubt that climate change is affecting ecosystems as well as the lifestyles of plants and animals around the globe. As temperatures rise, so do the complexity of the issues. Scientists, both in the United States ...
Environment
May 22, 2019
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Many ways to approach the Riemann Hypothesis have been proposed during the past 150 years, but none of them have led to conquering the most famous open problem in mathematics. A new paper in the Proceedings of the National ...
Mathematics
May 21, 2019
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