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Comparing the frequency of two distant optical clocks will enable sensitive tests of fundamental physics. Here, the authors compare two strontium optical-lattice clocks 690 kilometres apart to a degree of accuracy that is limited only by the uncertainty of the individual clocks themselves.

Klebsiella oxytoca provides protection against Salmonella Typhimurium via toxin-dependent inhibition in nutrient-rich, low-competition environments but switches to substrate-driven competition when nutrients are limited.

In this Consensus Statement, a consortium of microbiome scientists discuss current sequencing data sharing policies and propose the use of a Data Reuse Information (DRI) tag to promote equitable and collaborative data sharing.

Microplastics research is often based on commercial model particles. Here, the authors show that nominally identical particles may differ significantly in their properties and thus in their interactions with cells.

Busch and colleagues use single-cell and bulk TCR sequencing and structural affinity analyses of CMV-specific T cells to show that the immunodominance of high-affinity T cell clones declines during chronic infection with CMV, likely due to cellular senescence.

The composition and potential roles of extracellular vesicles released by gut archaea are poorly understood. Here, Weinberger et al. show that extracellular vesicles produced by human gut-derived methanogenic archaea are enriched in adhesin-like proteins, can be taken up by macrophages, and elicit responses in immune and epithelial cells.

Antimicrobial resistance has evolved over decades due to widespread antimicrobial use, with resistance genes now circulating across humans, animals and the environment, creating complex cross-sector connectivity challenges. This Perspective advocates for genomics-based studies of AMR connectivity to enable coordinated global action and investment under the One Health framework.

Here, the authors present a global meta-analysis of the human gut bacterium Ruminococcus gnavus, established an isolate collection with complete genomes and identified genetic features correlating with geography, age and disease using newly generated and public genome data.

Coherent quantum transition spectroscopy of the spin of a single antiproton is reported, demonstrating Rabi oscillations of the spin and enabling improved measurement of matter/antimatter symmetry using proton and antiproton magnetic moments.

Here, the authors apply a standardized system, called TXsystem, to transplant wild mouse gut microbiota into SPF mice, developing “TXwildlings” mice that stably retain natural microbiota and human-like immune traits, enhancing reproducibility and translational relevance.

Simultaneous activation of Wnt and Shh pathways in murine neural precursor cells results in the formation of embryonal tumors with multilayered rosettes (ETMR) that recapitulate the histological and molecular features of human tumors. This novel mouse model represents a platform for evaluating therapeutic approaches for this rare malignant pediatric brain tumor, and provides novel insights into the cell of origin and molecular mechanisms driving the disease.

The role of metabolism in acute myeloid leukaemia (AML) onset remains to be explored. Here, the authors explore the metabolic landscape of AML cells and the signature of extracellular vesicles (EVs) in peripheral blood and show that circulating EVs regulate leukaemia (stem) cell metabolic reprogramming.

A genome-wide study by the Long COVID Host Genetics Initiative identifies an association between the FOXP4 locus and long COVID, implicating altered lung function in its pathophysiology.

The authors present a public collection of 117 bacterial isolates from the pig gut, including the description of 38 novel taxa. Interesting functions discovered in these organisms include a new fucosyltransferease and sactipeptide-like molecules encoded by biosynthetic gene clusters.

The application and therapeutic success of CAR-T cell approaches are limited by the development of T cell exhaustion. Here, Stewart et al discover a role for IL-4 in driving CD8⁺ CAR-T cell exhaustion and demonstrate the improvement of CAR-T cell effectivity with interruption of IL-4 signalling.

Researchers identified 7 biological group of diffuse large B-cell lymphoma, one with poor prognosis. They developed a gene expression classifier to detect these groups, potentially improving prognosis and future treatments for the high-risk patients.

Genomic studies of Heliconius butterflies provide evidence that Heliconius elevatus is a hybrid species, and that its speciation was driven by introgression of traits from Heliconius melpomene into the other parent, an ancestor of Heliconius pardalinus.

Here the authors report that inhibition of de novo fatty acid synthesis by deleting the enzyme Acetyl-CoA-Carboxylase 1 in the intestinal epithelium results in the loss of crypt structures and a specific decline in Lgr5+ intestinal epithelial stem cells.

Unlike that in plants, fungi, and marine animals, bacteria are vastly underrepresented in the production of terpenoids. Here, the authors report a systematic screening of terpene synthases from bacteria and identify three new skeletons that are not found in other organisms.

The gut microbiota and microglia play critical roles in Alzheimer’s disease (AD). Here, the authors show that Bacteroides fragilis contributes to AD pathogenesis in mouse models by suppressing immune-mediated microglial clearance of amyloid beta.

Induction of tolerance in the gut relies on immunomodulatory functions of mesenteric lymph nodes (mLN). Here the authors show that mLN stromal cells receive early microbiota imprinting in the neonatal phase to exhibit long-term, location-specific transcriptional programs for the induction of regulatory T cells and peripheral tolerance.

Rho-family GTPase Rac1 activates the WAVE complex (WRC) to promote Arp2/3-mediated actin assembly in various processes. Here, the authors determined cryo-EM structures of WRC bound to Rac1 in different states, revealing how Rac1 binding activates WRC.

NADP(H) is a crucial cofactor, acting as a reducing agent in numerous pathways in living organisms. Here the authors report a ratiometric biosensor named NERNST, which can be used to estimate the NADP(H) redox status in bacterial, plant and animal cells and organelles.

Plasmacytoid dendritic cells (pDC) are the major IFN-I-producing cells, but this production returns to baseline soon after viral infection. Here the authors show that this decrease in IFN-I production and related pDC functions may be attributed to suppressed oxidative and glycolytic metabolism of pDCs, with lactate dehydrogenase B identified as a regulator.

How the carbon stocks of the Arctic–Boreal Zone change with warming is not well understood. Here the authors show that wildfires and large regional differences in net carbon fluxes offset the overall increasing CO₂ uptake.

The feasibility of Floquet engineering in graphene has been called into question due to its fast decoherence processes. Measurements of graphene’s photoemission spectrum now support the generation of Floquet states in this material.

Here, the authors describe a potent and selective CK1a molecular glue degrader with a broad antiproliferative potency. Crystallographic data provide rationale for the high degradation efficacy displayed by this compound.

Resolving ecological-economic trade-offs is a challenge in agriculture. Here, Wurz et al. find that in Malagasy vanilla agroforests, vanilla yield is generally not related to tree, herbaceous plant, bird, amphibian, reptile and ant biodiversity, creating opportunities for conservation outside protected areas.

Precision measurement plays an important role in frequency metrology and optical communications. Here the authors compare two geographically separate ultrastable lasers at 7 × 10⁻¹⁷ fractional frequency instability over a 2220 km optical fibre link and these measurements can be useful for dissemination of ultrastable light to distant optical clocks.

Ethylene glycol is an attractive two-carbon alcohol substrate for bioproduction as it can be derived from CO2 or syngas. Here, the authors design a five-step synthetic metabolic pathway in E. coli to enable the carbon-conserving biosynthesis of the platform chemical 2,4-dihydroxybutyric acid from ethylene glycol.

Data on the richness and composition of the skin microbiome from 2,349 individual amphibians, representing 205 species across a broad geographic range, is compared with local biotic and abiotic environmental factors.

Nucleoside-processing enzymes exhibit strict regioselectivity for glycosylation of purine nucleobases at N9. Here, the authors report an exception and show that wild type nucleoside phosphorylases also furnish N7-xanthosine, a non-native ribosylation regioisomer of xanthosine.

Acquired resistance to immunomodulatory drugs is common in multiple myeloma patients, but rarely attributed to genetic alterations. Here, proteomic, phosphoproteomic and RNA sequencing analysis in five paired pre-treatment and relapse samples reveals a CDK6-regulated protein resistance signature.

Subfemtosecond selective breaking of chemical bonds—such as carbon-hydrogen bonds in organic molecules—can open up new routes for laser-driven synthesis. Here, the authors show directional control of proton ejection in a symmetric acetylene molecule.

Laser-induced electron diffraction possesses sufficient resolution to resolve nuclear dynamics in molecules, but imaging was thought to depend on the orbital symmetries for the backscattering electrons. Here, the authors image the structure of randomly oriented O₂ and C₂H₂molecules and prove the contrary.

The Micrarchaeota lineage includes poorly characterized archaea with reduced genomes that likely depend on host interactions for survival. Here, the authors report a stable co-culture of a member of the Micrarchaeota and its host, and use multi-omic and physiological analyses to shed light on this symbiosis.

Years of data from atomic clocks around the world allow estimation of the variation of their rates with the spatial change of the solar potential. This allows the most precise null test of the local position invariance principle of general relativity.