About the Proceedings of the National Academy of Sciences (PNAS)
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Instructions for Authors - PNAS
About PNAS. PNAS has been at the forefront of scientific research for over a century. Established in 1914 as the peer reviewed journal of the National Academy of Sciences (NAS), PNAS is now one of the largest and most-cited multidisciplinary scientific journals in the world, with a global readership and more than 3,500 research articles published annually.
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Aug 28, 2024 · Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans the biological, physical, and social sciences.
Article and Journal Metrics - PNAS
As a signatory to the San Francisco Declaration on Research Assessment, PNAS is invested in improving the evaluation of scholarly research outputs.We track a range of article and journal metrics, with the goal of providing a transparent and rich view of article and journal performance.
Green Revolution: Impacts, limits, and the path ahead | PNAS
Jul 31, 2012 · Much of the success was caused by the combination of high rates of investment in crop research, infrastructure, and market development and appropriate policy support that took place during the first Green Revolution (GR).
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Where will climate change hit hardest? These interactive maps …
Feb 28, 2024 · For the first time in the historical record, the world has experienced a year around 1.5 °C warmer than preindustrial temperatures. The extent to which the planet warms further has big consequences for local extremes of heat, drought, and precipitation.
Table of Contents — August 27, 2024, 121 (35) - PNAS
Aug 27, 2024 · Cover image: Pictured is a cross-section of a developing mouse cochlea stained with fluorescent dyes. Nicholas Xie et al. report that a pair of signaling ligands, Wnt7b and Wnt5a, work together to control the coiling and elongation of the cochlear duct in mice.
The echo chamber effect on social media | PNAS
Feb 23, 2021 · According to group polarization theory (), an echo chamber can act as a mechanism to reinforce an existing opinion within a group and, as a result, move the entire group toward more extreme positions.Echo chambers have been shown to exist in various forms of online media such as blogs (), forums (), and social media sites (26–28).Some studies point out echo chambers as an emerging effect of ...
Congruent trophic pathways underpin global coral reef food webs
Jul 28, 2021 · Tropical ecosystems are highly diverse, disproportionally threatened, and critically important from an ecological and societal perspective ().Among them, coral reefs produce and recycle a remarkable amount of biomass, supporting the livelihoods of over 500 million people worldwide ().The invaluable productivity of reefs is mediated by a tremendous number of interactions across multiple trophic ...