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.
How much we value an item is often related to what other people have. You might want the newest fashion, but not once everybody has it. Or, winning a free lunch at your favorite restaurant might not seem as great if the other ...
Mar 27, 2020
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The human papillomavirus (HPV) is the main cause of several cancers, including cervical cancer, which kills almost 300,000 women around the world each year. Although vaccines offer a proven first line of defense against HPV ...
Mar 24, 2020
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We feel that we live in the present. When we open our eyes, we perceive the outside world as it is right now. But we are actually living slightly in the past.
Mar 17, 2020
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Many foods—whether it's the mozzarella on your favorite pizza, the olive oil in salad dressing or hollandaise sauce during asparagus season—contain lots of fat. The fatty acids in these foods are among the essential nutrients ...
Mar 17, 2020
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Life expectancy in the USA is no longer rising. This stagnation has long been largely attributed to increasing numbers of drug deaths due to the opioid crisis. But Mikko Myrskylä and colleagues have now shown that deaths ...
Mar 17, 2020
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The signaling molecule interleukin-2 (IL-2) has long been known to have powerful effects on the immune system, but efforts to harness it for therapeutic purposes have been hampered by serious side effects. Now researchers ...
Mar 17, 2020
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A drug candidate has been found in preclinical trials to stop tumor growth entirely, deliver more cancer-busting power than many commonly used chemotherapy drugs and do so with fewer toxic side effects and more ability to ...
Mar 16, 2020
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When Stanford University neuroscientist Brian Knutson tracked his smartphone usage, he was shocked to learn that he spent twice as much time on his phone as he had anticipated.
Mar 09, 2020
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A powerful Monash Biomedicine Discovery Institute (BDI) collaboration has revealed that a bacterial superbug can prevent stem cells in the gut from carrying out their vital role of regenerating the inner lining of the intestine. ...
Mar 16, 2020
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A component of breast milk may help protect premature babies from developing sepsis, a fast-moving, life-threatening condition triggered by infection. Researchers at Washington University School of Medicine in St. Louis and ...
Mar 16, 2020
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