Catálogo de publicaciones - revistas

<jats:title>River restoration guided by research</jats:title> <jats:p>Human activities have altered the flow regimes of many of Earth's rivers, with negative impacts on biodiversity, water quality, and ecological processes. In a Review, Palmer and Ruhi explain how restoration designs now attempt to mimic ecologically important aspects of natural flow regimes, guided by insights into how variations in flow affect biota and ecosystem processes. To be successful, such efforts must go beyond accounting for flood pulses to restore natural flow variability and achieve hydrological connectivity between a river and its surroundings.</jats:p> <jats:p> <jats:italic>Science</jats:italic> , this issue p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" related-article-type="in-this-issue" xlink:href="10.1126/science.aaw2087">eaaw2087</jats:related-article> </jats:p>

<jats:title>The need to stabilize global climate</jats:title> <jats:p> Climate change will be the greatest threat to humanity and global ecosystems in the coming years, and there is a pressing need to understand and communicate the impacts of warming, across the perspectives of the natural and social sciences. Hoegh-Guldberg <jats:italic>et al.</jats:italic> review the climate change–impact literature, expanding on the recent report of the Intergovernmental Panel on Climate Change. They provide evidence of the impacts of warming at 1°, 1.5°, and 2°C—and higher—for the physical system, ecosystems, agriculture, and human livelihoods. The benefits of limiting climate change to no more than 1.5°C above preindustrial levels would outweigh the costs. </jats:p> <jats:p> <jats:italic>Science</jats:italic> , this issue p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" related-article-type="in-this-issue" xlink:href="10.1126/science.aaw6974">eaaw6974</jats:related-article> </jats:p>

<jats:title>Livestock antibiotic resistance</jats:title> <jats:p> Most antibiotic use is for livestock, and it is growing with the increase in global demand for meat. It is unclear what the increase in demand for antibiotics means for the occurrence of drug resistance in animals and risk to humans. Van Boeckel <jats:italic>et al.</jats:italic> describe the global burden of antimicrobial resistance in animals on the basis of systematic reviews over the past 20 years (see the Perspective by Moore). There is a clear increase in the number of resistant bacterial strains occurring in chickens and pigs. The current study provides a much-needed baseline model for low- and middle-income countries and provides a “one health” perspective to which future data can be added. </jats:p> <jats:p> <jats:italic>Science</jats:italic> , this issue p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" related-article-type="in-this-issue" xlink:href="10.1126/science.aaw1944">eaaw1944</jats:related-article> ; see also p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6459" page="1251" related-article-type="in-this-issue" vol="365" xlink:href="10.1126/science.aay9652">1251</jats:related-article> </jats:p>

<jats:title>Identifying terminal nematode cells</jats:title> <jats:p> Single-cell RNA sequencing provides the power to identify the developmental trajectory of an organism. However, identifying the temporal lineage of cell development can be difficult without large-scale analyses. Packer <jats:italic>et al.</jats:italic> sequenced more than 80,000 cells from embryos of the roundworm <jats:italic>Caenorhabditis elegans</jats:italic> to determine the expression of genes directing the development of terminal cell types. Because all somatic cells in a <jats:italic>C. elegans</jats:italic> individual have been mapped, the authors are able to connect gene expression with cell lineages over time during development, noting stark transitions in some cases. </jats:p> <jats:p> <jats:italic>Science</jats:italic> , this issue p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" related-article-type="in-this-issue" xlink:href="10.1126/science.aax1971">eaax1971</jats:related-article> </jats:p>

<jats:p>Over centuries of slavery in America, systematic structures were erected to present enslaved people as “the other”—a race apart and less than human—as a way to justify the institution and forestall discussions of its inhumanity and the moral imperative to dismantle it. These efforts included invoking science, as objective arbiter, in support of these viewpoints. Some theories of human origins, for example, espoused by great names of science, reflected attempts to bolster constructs of racial inferiority rather than to advance science. But they did their damage, and we live with their fallout even today. How many of the current challenges in diversifying science are part of this legacy: lack of investment in education; belief in innate capacity to do science (or not); exclusionary teaching practices; tolerance of classroom microaggressions; implicit bias in hiring, and in assessing and valuing work?</jats:p>

<jats:p>A roundup of weekly science policy and related news.</jats:p>

<jats:p>Even common birds are in steep decline, spurring hunt for causes.</jats:p>

<jats:p>Goal is to eliminate paywalls while preserving revenue.</jats:p>

<jats:p>Ancient event may have led to a boom in animal life.</jats:p>

<jats:p>Some see nonanimal models as the future, but others worry about health impacts.</jats:p>