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Effective neural repair after spinal cord injury requires alignment of astrocytes to contain the lesion, but the molecular mechanisms that orchestrate glial cell arrangement in injury response are poorly defined. Here, the authors identify guidance receptor Plexin-B1 as a regulator of astrocyte membrane integrity and process plasticity, promoting glial border formation, wound corralling, and functional recovery.

The interfacial energy between a macroscopic surface consisting of different materials and a liquid is independent of the surface structure. It is now shown that because of the way in which a multicomponent nanoscale surface affects the solvent–molecule arrangement, it is both the surface structure and composition that dictate the interfacial energy.

A high-resolution, global atlas of mortality of children under five years of age between 2000 and 2017 highlights subnational geographical inequalities in the distribution, rates and absolute counts of child deaths by age.

A year-long experiment in a wet tropical forest found that 4 ^oC of warming boosted soil CO₂ emissions by 42-204%. These high rates suggest tropical soils may release more carbon under future warming than climate models predict.

Bottlenecks in qPCR-based COVID-19 diagnostics include the lengthy multistep process and reagent shortages. Here the authors report OIL-TAS which integrates RNA extraction and detection into a single device.

Extracellular matrix (ECM) remodeling is a hallmark of fibrosis thought to be driven by mesenchymal cells. Here, the authors discover that YAP-TEAD/LOX axis is activated in distal lung epithelial cells, which contributes to ECM remodeling in pre-clinical models of pulmonary fibrosis.

The phylogenetic and hybridization history of Xiphophorus fish remains contentious, despite their long-standing role as models in evolutionary biology and human disease research. This study presents a complete genome resource that resolves the previously conflicting phylogeny and evolutionary history of the group, revealing that hybridizations preceded speciation.

Individuals are willing to punish antisocial others even at a personal cost. Marshall et al. examine the motivational basis of this behaviour from a developmental standpoint, showing that children—like adults—punish others for both retributive and consequentialist reasons.

Perivascular cells are essential to the formation and stabilization of new blood vessels during angiogenesis. Here, Hess and Kelly-Goss et al. show that the stem cell pluripotency factor Oct4 promotes perivascular cell survival and migration required for angiogenesis in contexts of tissue injury and hypoxia.

Commercially viable catalytic CO₂ electroreduction to CO would enable many green technologies, yet it is impeded by the initial hydrogenation step of CO₂. Here, the authors report Ni-Cd dual atom catalysts with complementary properties of favorable adsorption of CO₂ and H to overcome this barrier.

A secure framework that harmonizes storage and querying of clinical and genetic data using blockchain technology was developed to support combined genotype–phenotype queries, improving transparency into how and when health information is used.

Hosios et al. demonstrate that inhibition of mechanistic target of rapamycin complex 1 in cells and in tumors in mice leads to a lysosome-dependent but autophagy-independent shift in membrane lipid metabolism, resulting in increased intracellular triglyceride pools.

Levels of five chlorofluorocarbons rose in the atmosphere from 2010 to 2020 despite their production being banned by the Montreal Protocol, probably arising as by-products of hydrofluorocarbon production, according to analysis of abundance and emissions data.

Historical ecology uses a wide and varied range of sources to investigate long-term dynamics of ecosystems, species and their traits, and different dimensions of nature–human interactions. This Perspective discusses the value of this approach for biodiversity and conservation science, and offers a strategy for the continued development of the field.

Injured peripheral neurons activate pro-growth gene programs, yet the mechanisms remain unclear. Here, the authors show that disruption of circadian clock factor Bmal1 accelerates axon regeneration through augmented epigenetic responses after injury.

Dietary sugar intake may contribute to the development non-alcoholic fatty liver disease. Here the authors investigated the effects of chronic dietary sucrose on the liver-adipose-microbiome axis in mice, and report that sex is a moderating factor that influences sucrose-driven lipid storage in the liver and adipose tissue lipolysis.

Responses to immune checkpoint blockade (ICB) in patients with glioblastoma are limited. Here the authors show that Calmodulin-Dependent Kinase Kinase 2 (CaMKK2) is expressed in tumor associated macrophages and neurons and is associated with resistance to ICB in preclinical models of glioblastoma.

Matrix metalloproteinase enzymes are widely known to contribute to the breakdown of tissues. Here, the authors utilise a biomaterial substrate functionalised with a laminin fragment to modulate the expression of these enzymes, subsequently controlling the integrity of tissue.

The emerging fungal pathogen Bsal is a potential threat for amphibians. Here, the authors use data from dose-response experiments on 35 species to assess vulnerability of North American amphibians to Bsal and identify species and areas potentially at risk.

Crockett et al. used model-based fMRI to investigate the neural basis of decisions to profit from harming others vs. themselves. Most people preferred to harm themselves over others for profit. This moral preference was associated with diminished neural responses in value-sensitive brain regions to profit gained from harming others.

An integrative approach highlights the challenge of identifying new antibiotic drug targets.

The authors describe a method for generating functional neural spheroids and assembloids for disease modeling and drug discovery by cell aggregation of differentiated human iPSC derived neurons and astrocytes at cell type compositions mimicking specific regions of the human brain.

Despite the key role of recombination in meiosis, increasing evidence indicates substantial variation in recombination rates among humans, and between humans and other mammals. Understanding the forces that shape this variation will require a combination of evolutionary and molecular perspectives.

When cells interact with an artificial surface, the result is a rapidly evolving and complex interface. This Perspective discusses how expressing the properties of both the cell and the substrate in chemical terms can aid in future material design. We also explore the importance of using multifunctional surfaces with quantitative, dynamic capabilities.

In this Review, Gasperini, Tome and Shendure discuss the evolving definitions of transcriptional enhancers, as well as diverse modern experimental tools to identify them. The authors describe how these diverse mindsets and methods provide differing but complementary insights into enhancers, each with notable strengths and caveats. They discuss how such views and approaches might be combined in a comprehensive catalogue of functional enhancers.