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Structural racism is a root cause of poor health in the United States and underlies COVID-19–related disparities for Black and Latinx populations. We describe how one community-based organization responded to structural racism and COVID-19 in Florida. Informed by the literature on how public health practice changed from emphasizing prevention (Public Health 1.0) to collaboration between governmental and public health agencies (Public Health 2.0) and examining social determinants of health (Public Health 3.0), we call for a politically engaged Public Health 4.0. (Am J Public Health. 2021;111(S3):S201–S203. https://doi.org/10.2105/AJPH.2021.306408 ) 

Los métodos dendrocronológicos tienen el potencial de proporcionar fechas de calendario precisas, sin embargo son escasamente utilizados en las investigaciones arqueológicas Mesoamericanas. Esto se debe a la existencia de varios supuestos de larga permanencia, pero erróneos tales como: que los anillos de los árboles en esta región no reflejan el crecimiento anual y la variabilidad medioambiental, que no existe un número adecuado de muestras, y que las mediciones de los anillos de los árboles no pueden ser útiles sin la existencia de árboles modernos para vincular las curvas prehispánico. En este artículo, se presentan datos de los sitios de La Quemada y Los Pilarillos, localizados en el Valle de Malpaso, Zacatecas, para demostrar que existen muestras arqueológicas dendrocronológicamente adecuadas, medibles, que se pueden “ cross-date ”, y que se pueden obtener fechas precisas usando un método llamado “calibración de radiocarbono de secuencias definidas” ( radiocarbon wiggle-matching ). El trabajo pone en evidencia el potencial de estos métodos para abordar cuestiones cronológicas, y en el futuro, también climáticas, las cuales hasta la fecha han eludido el trabajo arqueológico en la región. 

Abstract Galaxy is a mature, browser accessible workbench for scientific computing. It enables scientists to share, analyze and visualize their own data, with minimal technical impediments. A thriving global community continues to use, maintain and contribute to the project, with support from multiple national infrastructure providers that enable freely accessible analysis and training services. The Galaxy Training Network supports free, self-directed, virtual training with >230 integrated tutorials. Project engagement metrics have continued to grow over the last 2 years, including source code contributions, publications, software packages wrapped as tools, registered users and their daily analysis jobs, and new independent specialized servers. Key Galaxy technical developments include an improved user interface for launching large-scale analyses with many files, interactive tools for exploratory data analysis, and a complete suite of machine learning tools. Important scientific developments enabled by Galaxy include Vertebrate Genome Project (VGP) assembly workflows and global SARS-CoV-2 collaborations. 

A wide range of literature connects sex ratio and mating behaviours in non-human animals. However, research examining sex ratio and human mating is limited in scope. Prior work has examined the relationship between sex ratio and desire for short-term, uncommitted mating as well as outcomes such as marriage and divorce rates. Less empirical attention has been directed towards the relationship between sex ratio and mate preferences, despite the importance of mate preferences in the human mating literature. To address this gap, we examined sex ratio's relationship to the variation in preferences for attractiveness, resources, kindness, intelligence and health in a long-term mate across 45 countries ( n = 14 487). We predicted that mate preferences would vary according to relative power of choice on the mating market, with increased power derived from having relatively few competitors and numerous potential mates. We found that each sex tended to report more demanding preferences for attractiveness and resources where the opposite sex was abundant, compared to where the opposite sex was scarce. This pattern dovetails with those found for mating strategies in humans and mate preferences across species, highlighting the importance of sex ratio for understanding variation in human mate preferences. 

Considerable research has examined human mate preferences across cultures, finding universal sex differences in preferences for attractiveness and resources as well as sources of systematic cultural variation. Two competing perspectives—an evolutionary psychological perspective and a biosocial role perspective—offer alternative explanations for these findings. However, the original data on which each perspective relies are decades old, and the literature is fraught with conflicting methods, analyses, results, and conclusions. Using a new 45-country sample ( N = 14,399), we attempted to replicate classic studies and test both the evolutionary and biosocial role perspectives. Support for universal sex differences in preferences remains robust: Men, more than women, prefer attractive, young mates, and women, more than men, prefer older mates with financial prospects. Cross-culturally, both sexes have mates closer to their own ages as gender equality increases. Beyond age of partner, neither pathogen prevalence nor gender equality robustly predicted sex differences or preferences across countries.