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The somitic mesoderm is seen as the main source of brown adipose tissue, although some depots are of partially unknown origin. Here, the authors show that Osr1 labels multipotent dorsal aorta progenitors at E9.5 that contribute to cartilage, muscle, and adipose tissues, revealing a non-somitic contribution to several brown adipose depots.

The APOE-ε4 allele is the strongest genetic risk factor for late-onset Alzheimer’s disease, but it is not deterministic. Here, the authors show that common genetic variation changes how APOE-ε4 influences cognition.

CLPP-deficiency-driven mitochondrial dysfunction in brown adipose tissue leads to the accumulation of d-2-hydroxyglutarate, in turn promoting lipid-droplet enlargement by altering gene expression and epigenetically regulating nuclear stiffness.

The authors developed a microfluidic device, FIND-Chip, designed to automate and enhance oocyte recovery from follicular fluid, a process traditionally done manually. When used in clinical settings, the device recovered additional oocytes missed during manual screening, substantially increasing the number of viable oocytes available for in vitro fertilization.

At single-cell resolution, Tarkhov et al. delineate stochastic and co-regulated components of epigenetic aging, revealing a simultaneous loss of regulation at the epigenetic and transcriptional levels in aging.

GDF15 has been associated with cancer-associated cachexia. Here, the authors show that STK11/LKB1 loss-of-function mutations in non-small cell lung cancer result in an exaggerated integrated stress response culminating in the tumor cell secretion of the cytokine GDF15 promoting cachexia.

Individual dietary specialization is impacted by development, social learning, genetics, and environment. Here, the authors document European brown bear diet in a multigenerational female sample, finding that social learning during rearing was the most important contributor to dietary specialization.

A comprehensive atlas platform integrating transcriptional and epigenetic data enables more precise engineering of T cell states, accelerating the rational design of more effective cellular immunotherapies.

Habitat-forming marine macrophytes (brown macroalgae and seagrasses) provide important ecological and socio-economic services but are threatened by climate change. In this study, models of their future distribution under different climate change projections forecast a substantial redistribution of these groups globally, with loss of diversity and habitat.

JWST imaged three of the gas giants orbiting the star HR 8799 to study their atmospheres. The uniform enrichment of heavy elements, including sulfur, indicates that they formed like Jupiter and Saturn by accreting a lot of icy and rocky solids.

Truncated version of adenylyl cyclase 3 acts as a cold-induced rheostat during long-term brown adipose tissue activation.

Adipose tissue is composed of a number of adipocytes and a number of other cells including immune cells. Here the authors use single-cell sequencing of murine brown adipose tissue immune cells and describe multiple macrophage and monocyte subsets and show that monocytes contribute to brown adipose tissue expansion.

Sirtuins have been reported to positively regulate brown adipose tissue thermogenesis. Here the authors report that brown adipocytic SIRT7 suppresses whole-body energy expenditure and thermogenesis in mice, potentially by attenuating batokine gene expressions and Ucp1 mRNA translation.

Brown adipose tissue, known produce heat by metabolizing fat, is also secretes molecules capable of communicating with other organs. Here the authors show that brown adipose tissue secretes kininogen, a component of heat system regulation, that provides auto-regulatory inhibitory signaling in brown adipose tissue.

The standard method for identifying active brown adipose tissue is costly and exposes patients to radiation. Here, the authors show that convolutional neural networks can predict [¹⁸F]-FDG uptake by BAT from unenhanced CT scans and improve the segmentation accuracy compared to conventional CT thresholding.

The identification of cellular targets for natural products that potently inhibit the growth of cancer cell lines implicates oxysterol-binding proteins in the growth of cancer cells. These natural products, termed ORPphilins, also affect sphingomyelin biosynthesis.

Measurement of the 2S–6P transition in cryogenic atomic hydrogen using laser spectroscopy reveals a proton radius value that is 2.5-fold more precise than previous determinations and in excellent agreement with the muonic value, and tests the Standard Model to 0.7 parts per trillion.

Targeting neurons that regulate energy balance may offer new approaches for obesity treatment. Here, authors show that chemogenetic and pharmacological manipulation of GABAergic neurons in the DRN/vlPAG increases adaptive thermogenesis and reduces weight gain in mice fed a highfat diet.

Electron transfer in molecular wires is typically dominated by tunnelling at short lengths. Now it is shown that conjugated molecular wires anchored to indium tin oxide electrodes exhibit a hopping mechanism even at 1-nm lengths, enabling charge extraction in tin perovskite solar cells and improved device performance.

Observations from the JWST MIRI showed the detection of ¹⁴NH₃ and ¹⁵NH₃ isotopologues in the atmosphere of a cool brown dwarf, along with a ¹⁴N/¹⁵N value consistent with star-like formation by gravitational collapse.

Genome-wide association meta-analysis identifies 58 independent risk loci for major anxiety disorders among individuals of European ancestry and implicates GABAergic signaling as a potential mechanism underlying genetic risk for these disorders.

Avian influenza jumped from wild birds into dairy cattle. Here, the authors report that two mutations in the viral polymerase helped the virus to quickly adapt to cattle. Mutations increased the polymerase activity and made the virus better at replicating in human cells.

Dermatoscopy is a common method to aid in diagnosis of melanoma, however, its utility in predicting metastasis is not fully known. Here, the authors leverage a cohort of 30 dermatologists to develop models to predict prognosis from dermatoscopic images.

Sugimoto et al. show that maresin 2, a specialized pro-resolving mediator that is secreted from brown adipose tissue upon cold exposure, contributes to amelioration of obesity-induced inflammation.

The ZFTA–RELA fusion, an oncogene for ependymomas, promotes the production of itaconate, and its dependence on this metabolite represents a new therapeutic target for this cancer.

cellSTAAR advances noncoding rare variant association analysis by integrating single-cell genomics data.

X-ray absorption has enabled a probe of the photoionized gas close to seven gamma-ray bursts, revealing their origin in star-forming regions and providing further evidence that long gamma-ray bursts originate in collapsars.

Engineered mucus-tethering bispecific nanobodies neutralize and entrap viruses to enhance mucosal immunity, preventing influenza infection and limiting SARS-CoV-2 transmission.

Whole-ecosystem manipulations of Caribbean islands occupied by brown anoles, involving the addition of competitors (green anoles) and/or top predators (curly-tailed lizards), demonstrate that predator introductions can alter the ecological niches and destabilize the coexistence of competing prey species.

Measurement-free quantum error correction allows to avoid costly mid-circuit measurements and feed-forward controls. Here, the authors present a toolbox of logical operations needed for measurement-free fault-tolerant universal quantum computing and demonstrate a measurement-free logical fault-tolerant logical algorithm using an error-detecting code on an ion-trap quantum processor.

Spatiotemporal insight into photoactivation of the prototypical B₁₂ photoreceptor CarH is revealed across nine orders of magnitude in time, identifying a transient adduct that distinguishes it from thermally activated B₁₂ enzymes.

Stable adipocytes resist lipolysis in healthy states but are highly susceptible to a catecholamine-independent, neurosystemic pathway-driven catabolic state.

Multi-omics datasets pose major challenges to data interpretation and hypothesis generation owing to their high-dimensional molecular profiles. Here, the authors develop ActivePathways method, which uses data fusion techniques for integrative pathway analysis of multi-omics data and candidate gene discovery.

Understanding collective behaviour is an important aspect of managing the pandemic response. Here the authors show in a large global study that participants that reported identifying more strongly with their nation reported greater engagement in public health behaviours and support for public health policies in the context of the pandemic.

Distinct neuron subtypes compartmentalize specific functions by differentially localizing and translating specific RNAs. This work identifies dynamic subtype- and stage-specific growth cone molecular machinery during neocortical circuit development.

Many biological systems appear to organize their dynamics close to a critical point. Now it is shown that the protein array mediating Escherichia coli chemosensing is near-critical, enabling large signal amplification without compromising response speeds.

Here, the authors found that human NAT16 acetylates histidine in vitro and in vivo. Biochemical and structural characterisation uncovered a double-GNAT fold with distinct active site architecture that is conserved across species.

A hidden quality-control system to filter out defective sperm during development is exploited by selfish genes to eliminate competing chromosomes.

Brown fat is a thermogenically active organ that burns energy instead of storing it and has been the focus of intense research recently in the hopes of harnessing this activity to combat obesity. Sven Enerbäck and his colleagues now show that human neonates possess a classical form of this type of fat, suggesting hope that its expansion in adults may indeed be an avenue of therapy to treat obesity.

Humanity’s Last Exam, a multi-modal benchmark at the frontier of human knowledge, is designed to be an expert-level closed-ended academic benchmark with broad subject coverage.

Wastewater-based surveillance tends to focus on specific pathogens. Here, the authors mapped the wastewater virome from 62 cities worldwide to identify over 2,500 viruses, revealing city-specific virome fingerprints and showing that wastewater metagenomics enables early detection of emerging viruses.

The variability in clinical outcomes of SARS-CoV-2 infection is partly due to deficiencies in production or response to type I interferons (IFN). Here, the authors describe a FIP200-dependent lysosomal degradation pathway, independent of canonical autophagy and type I IFN, that restricts SARS-CoV-2 replication, offering insights into critical COVID-19 pneumonia mechanisms.

Ginhoux, Dutertre and colleagues provide a comprehensive analysis of dendritic cell subsets and states across human tumoral and juxtatumoral tissues.

Over 20 species of geographically and phylogenetically diverse bird species produce convergent whining vocalizations towards their respective brood parasites. Model presentation and playback experiments across multiple continents suggest that these learned calls provoke an innate response even among allopatric species.