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.
When people buy stocks, they tend to have beliefs in place about how well the investments will perform and which ones are riskier bets. Economists would love to know what is going on in people's minds, but because that is ...
Economics & Business
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Global one-day strikes, driven by young people demanding action against climate change, are planned for Sept. 20 and 27, sandwiched around a meeting next week of world leaders on the issue at the United Nations. The protests ...
Environment
7 hours ago
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Just as the steam engine set the stage for the Industrial Revolution, and micro transistors sparked the digital age, nanoscale devices made from DNA are opening up a new era in bio-medical research and materials science.
Bio & Medicine
Sep 18, 2019
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Research by ecologists at the University of Toronto and Ontario's Ministry of Natural Resources and Forestry shows strong evidence in a freshwater lake of "fishing down the food web"—the deliberate shift away from top predatory ...
Ecology
Sep 18, 2019
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The expression "you are what you eat" has taken on new meaning. In an experiment in fruit flies, or Drosophila melanogaster, researchers at the University of Pennsylvania have found that adding different species of microbes ...
Evolution
Sep 18, 2019
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Human red blood cells (RBCs) are extremely resilient and have the capacity to undergo cellular deformation as they navigate across various micro-vessels and capillaries. Over their 120-day normal lifespan, RBCs must undergo ...
Cell & Microbiology
Sep 17, 2019
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Scientists at Plant & Food Research, along with colleagues at Lincoln University and overseas, have recently discovered a brand new class of flavonoid pigments called "auronidins."
Plants & Animals
Sep 17, 2019
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It's well known that the production of cement—the world's leading construction material—is a major source of greenhouse gas emissions, accounting for about 8 percent of all such releases. If cement production were a country, ...
Materials Science
Sep 17, 2019
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An international research group at UBC, Harvard University and Cardiff Metropolitan University has discovered how the human heart has adapted to support endurance physical activities. This research examines how the human ...
Evolution
Sep 16, 2019
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Brief, friendly door-to-door visits by uniformed police officers substantially improve people's attitudes toward the police and increase their trust in law enforcement, according to a new study of community-oriented policing ...
Social Sciences
Sep 16, 2019
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