different designs and means of propulsion, though practical uses for these mini-motors have yet to be realized. Image courtesy of Janet Iwasa (University of Utah, Salt Lake City). New Research In, physical Sciences, featured Portals, articles by Topic, biological Sciences. Image courtesy of the American Museum of Natural History. Journal Club highlights interesting, recently published papers.
Front Matter, news Feature: Whats the best way to build a molecular machine? Researchers report early metal use and crematory practices by indigenous groups in the southeastern United States. A study suggests that social learning from exposure to opposing political views on social networks can improve accuracy and remove partisan bias, but displaying political symbols during cross-party communication can prevent such learning, according to the authors. Click here to view selections in the latest issue of pnas.
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