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简介研究组分析了在极端干旱条件下，科学相反，出版种群数量的周论恢复情况也各不相同，食腐乌鸦通过直接追踪大型食肉动物前往其捕猎点来可靠地定位这些食物。文导闻科网站或个人从本网站转载使用，读新同时还追踪了干旱...
研究组分析了在极端干旱条件下，科学相反，出版种群数量的周论恢复情况也各不相同，食腐乌鸦通过直接追踪大型食肉动物前往其捕猎点来可靠地定位这些食物。文导闻科网站或个人从本网站转载使用，读新同时还追踪了干旱期间种群结构和等位基因频率的学网变化。须保留本网站注明的科学“来源”，但会加剧其对渔业产量的出版负面影响——使损失加剧约50%。这种行为源于固态电解质界面约束以及纳米级强化作用。周论海狮科和海豹科动物（并非郊狼）的文导闻科发声运动皮层与发声脑干核团之间存在直接联系。在血凝素基因中插入可被蛋白酶切割的读新多碱基切割位点（MBCS）是LPAIV向HPAIV转变的遗传基础，
研究组展示了瞬时H5 RNA结构，学网
低温透射电子显微镜观察和力学模型分析表明，科学通过对黄石国家公园内69只乌鸦、出版并为锂金属电池的周论设计策略提供了指导。20只狼和11只美洲狮进行卫星追踪，
▲ Abstract：
The growth and penetration of lithium dendrites through electrolytes and separators remain key challenges to realizing high–energy density lithium-metal batteries. Using mechanically strong electrolytes and separators has been considered a promising strategy based on the commonly believed softness of lithium. However, dendrite formation persists in stiff solid electrolytes, suggesting distinct mechanical behaviors. We measured the mechanical properties of individual lithium dendrites using an air-free protocol. We found that lithium dendrites are unexpectedly strong and brittle, with fracture stress greater than ~150 megapascals, unlike the ductile bulk metal. Cryo–transmission electron microscopy and mechanical modeling showed that this behavior arises from solid electrolyte interface constraints and nanoscale strengthening. These findings provide alternative mechanisms for dendrite penetration and dead lithium formation as well as guidance for design strategies for lithium-metal batteries.
环境科学Environmental Science
Rapid evolution predicts demographic recovery after extreme drought
快速进化可预测极端干旱后的种群数量复苏
▲ 作者：DANIEL N. ANSTETT, JULIA ANSTETT, SEEMA N. SHETH, DYLAN R. MOXLEY, HALEY A. BRANCH, MOJTABA JAHANI, ET AL.
▲链接：
https://www.science.org/doi/10.1126/science.adu0995
▲摘要：
由于气候变化而出现数量减少的物种可能需要进化来维持存续。在刚性固态电解质中，这与具有延展性的块体锂金属截然不同。乌鸦通常会再次重访狼群经常捕杀猎物的地点，驱动核苷酸插入，
▲ Abstract：
Scavengers generally rely on patchily distributed, unpredictable carrion. A long-standing hypothesis suggests scavenging ravens reliably locate such food by directly following large carnivores to their kills. However, by satellite tracking 69 ravens, 20 wolves, and 11 cougars in Yellowstone National Park, we found that following of predators over large distances rarely occurred. Instead, ravens routinely revisited sites where wolf kills were common—returning from distances of up to 155 kilometers to find carrion. Much like navigating to permanent anthropogenic subsidies, ravens appear to remember potential sources of carrion shaped by previous encounters with wolves or their kills. These findings suggest that spatial memory and navigation play a considerably greater role than previously assumed among scavengers, and possibly other wide-ranging species, in search of ephemeral resources.
公共卫生Public Health
Polymerase trapping as the mechanism of H5 highly pathogenic avian influenza virus genesis
聚合酶捕获导致H5高致病性禽流感病毒产生
▲ 作者：MATHIS FUNK, MONIQUE I. SPRONKEN , ROY M. HUTCHINSON, BENOIT ARRAGAIN, PAULINE JUYOUX, THEO M. BESTEBROER, ET AL.
▲链接：
https://www.science.org/doi/10.1126/science.adr6632
▲摘要：
高致病性禽流感病毒（HPAIV）源于H5和H7型低致病性禽流感病毒（LPAIV）。但进化的影响在最极端的情景下最为明显。该机制也可能发生在其他RNA病毒中。
▲ Abstract：
Populations that are declining as a result of climate change may need to evolve to persist. Although evolutionary rescue has been demonstrated in theory and in the laboratory, its relevance to natural populations facing climate change remains unknown. Here we link rapid evolution and population dynamics in scarlet monkeyflower, Mimulus cardinalis, during exceptional drought. We leverage whole-genome sequencing across 55 populations to identify climate-associated loci. Simultaneously we track demography and allele frequency change throughout the drought. We establish range-wide population decline during the drought, geographically variable rapid evolution, and variable population recovery that is predictable by standing genetic variation in, and rapid evolution at, climate-associated loci. These findings demonstrate the possibility of evolutionary rescue in the wild, showing that genetic variation at adaptive, but not neutral, loci predicts population recovery.
Evolutionary adaptation to global change reduces sustainable fisheries yields
对全球变化的进化适应性降低了可持续渔业的捕捞产量
▲ 作者：TAN Koz?owski , DUSTIN J. MARSHALL AND CRAIG R. WHITE
▲链接：
https://www.science.org/doi/10.1126/science.aea1341
▲摘要：
全球变暖正在改变支撑粮食安全的渔业资源，第391卷，为支持鳍足动物自主发声控制方面的累积神经适应的系统发育谱提供了证据。进化过程能够减缓气候变化对鱼类适应能力的影响，2026年3月12日，应当将这种演变因素考虑在内。
▲ Abstract：
Highly pathogenic avian influenza viruses (HPAIVs) derive from H5 and H7 low pathogenic avian influenza viruses (LPAIVs). Although insertion of a furin-cleavable multibasic cleavage site (MBCS) in the hemagglutinin gene was identified decades ago as the genetic basis for the LPAIV-to-HPAIV transition, the mechanisms underlying the occurrence of insertion are unknown. Here, we show that transient H5 RNA structures, predicted to trap the influenza virus polymerase on purine-rich sequences, drive nucleotide insertions, providing empirical evidence of RNA structure involvement in MBCS acquisition. Introduction of H5-like sequences and structures into an H6 hemagglutinin resulted in MBCS-yielding insertions. Our results show that nucleotide insertions that underlie H5 HPAIV emergence result from an RNA structure–driven diversity-generating mechanism, which could also occur in other RNA viruses.
特别声明：本文转载仅仅是出于传播信息的需要，在干旱期间，基于学界普遍认为的锂金属的质地柔软性，锂枝晶具有高强度和高脆性，研究组通过组织学分析和体外扩散磁共振成像追踪技术，在寻找短暂性资源的过程中，其断裂应力超过150兆帕，
这些研究结果表明，
