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Thermal lepton pairs are ideal probes for the temperature of quark-gluon plasma. Here, the STAR Collaboration uses thermal electron-positron pair production to measure quark-gluon plasma average temperature at different stages of the evolution.

A new artificial intelligence model, DeepSeek-R1, is introduced, demonstrating that the reasoning abilities of large language models can be incentivized through pure reinforcement learning, removing the need for human-annotated demonstrations.

Tissue-specific mRNA or gene editing machinery delivery is achieved with lipid nanoparticles containing peptides with specific sequences, which tune the protein corona of the particles by mechanical optimization of peptide–protein binding affinities.

Combining atomic-scale imaging and density-functional-theory defect phase diagrams, this study shows that boron at steel grain boundaries rearranges iron atoms, triggers defect phase transformations, and greatly increases resistance to embrittlement.

A combination of adenovirus-vectored and subunit protein intranasal vaccine enhances immune response against SARS-CoV-2 variants in animal models and humans.

The quark structure of the f₀(980) hadron is still unknown after 50 years of its discovery. Here, the CMS Collaboration reports a measurement of the elliptic flow of the f₀(980) state in proton-lead collisions at a nucleon-nucleon centre-of-mass energy of 8.16 TeV, providing strong evidence that the state is an ordinary meson.

The Einstein Probe has discovered a fast X-ray transient, EP240414a, associated with a broad-lined type Ic supernova. Its unusually soft spectrum and weak jet add to the diversity of stellar deaths and suggest a previously unknown Wolf–Rayet star explosion mechanism.

This study introduces the Cattle Cell Atlas, a single-cell expression resource including 1,793,854 cells from 59 tissues. Integrative analyses leveraging this atlas provide insights into the biology underlying bovine monogenic and complex traits.

Proteins are usually produced in living cells, but hydrogels that incorporate genes demonstrate that cells aren’t always needed. The gels produce a wide variety of proteins without cells, and with higher yields than the equivalent solution method. Materials-related proteins that have been difficult to produce by other methods can now be made in greater quantities.

Solar cells based on 3D/2D perovskite heterostructures show promising performance, but ion diffusion limits the device stability. Now Luo et al. suppress ion diffusion by inserting a cross-linked polymer between the 2D and 3D layers, improving the operational stability.

While Bell inequalities have been violated several times—mostly in photonic systems—their violations within particle physics experiments are less explored. Here, the BESIII Collaboration showcases Bell-violating nonlocal correlations between entangled hyperon pairs.

Here, the authors show that KDM2A regulates cell cycle progression, modulation of H3K36me2 and H3K27me3 chromatin states and gene repression which are critical for survival of differentiating spermatogonia. KDM2A regulates progression through meiosis as well.

Enantioselective catalytic C(sp³)–H fluorination has been limited to electrophilic fluorine sources. Now chiral palladium catalysts bearing amino sulfonamide ligands enable enantioselective incorporation of nucleophilic fluoride into unactivated aliphatic C–H bonds with demonstrated applications to ¹⁸F-radiolabelling using [¹⁸F]KF.

Intercalating alkali metals into picene—a hydrocarbon with five linearly fused benzene rings—results in superconducting materials. Now, alkali-metal-doped phenanthrene, which consists of three fused benzene rings, is also found to be superconducting, opening up a broader class of organic superconductors.

Although the Ruddlesden–Popper series of compounds offer a range of appealing properties, their fabrication in thin-film form has been challenging. Using molecular beam epitaxy, layered oxide films of this family are synthesized, and shown to undergo a dynamical rearrangement during the growth process.

An in situ-grown layer of SiO_xN_y contributes to passivating surface defects in inverted organic solar cells, enabling power conversion efficiency of up to 18.49% and an estimated device lifespan of over 16 years.

The death of massive stars has traditionally been discovered by explosive events in the gamma-ray band. Liu et al. show that the sensitive wide-field monitor on board Einstein Probe can reveal a weak soft-X-ray signal much earlier than gamma rays.

Complete sequences of chromosomes telomere-to-telomere from chimpanzee, bonobo, gorilla, Bornean orangutan, Sumatran orangutan and siamang provide a comprehensive and valuable resource for future evolutionary comparisons.

Zhang et al. show that YAP binds to TDP-43 to promote TDP-43 multimerization and phase separation. YAP and TDP-43 may co-localize in multiple cell types in oxidative stress and in brain samples from individuals with amyotrophic lateral sclerosis.

The extraembryonic yolk sac is a major location for developmental hematopoiesis, but it is unclear whether non-bone marrow sources contribute during adulthood. Here they show that embryonically derived endothelial-macrophage progenitor cells located in the aorta are a bipotent source of macrophage and endothelial cells later in life.

Genome-wide CRISPR/Cas9 screening reveals novel modulators of heparan sulfate proteoglycans that regulate cellular uptake of α-synuclein fibrils, including in human dopaminergic neurons.

Zhang, Mille-Fragoso and colleagues developed a synthetic receptor platform named LIDAR (Ligand-Induced Dimerization-Activating RNA editing), which enables ligand-responsive gene regulation without the need of DNA promoters and is, thus, compatible with mRNA delivery.

The semileptonic decay channels of the Λc baryon can give important insights into weak interaction, but decay into a neutron, positron and electron neutrino has not been reported so far, due to difficulties in the final products’ identification. Here, the BESIII Collaboration reports its observation in e+e- collision data, exploiting machine-learning-based identification techniques.

Composites of carbon nanotubes and superconductors provide technologically important new, or improved, functionalities. Here, with a chemical solution approach, well-aligned carbon nanotube forests embedded in a superconducting NbC matrix are shown to effectively enhance the superconducting properties of NbC.

The LHCb experiment at CERN has observed significant asymmetries between the decay rates of the beauty baryon and its CP-conjugated antibaryon, thus demonstrating CP violation in baryon decays.

Ytterbium oxide buffer layer for use in perovskite solar cells yields a certified power conversion efficiency of more than 25%, which enhances stability across a wide variety of perovskite compositions.

Enhancing the superconducting temperature is often the main driver of synthetic studies of novel superconducting materials. Now, an approach yielding an air-stable iron selenide system that superconducts up to 40 K is reported.

In topological insulators, studies have largely concentrated on the spin part of the wavefunction. But the spin–orbit coupling is strong, so the orbital components of the wavefunction need to be measured as well. Surprisingly, the orbital wavefunction turns out to be asymmetric about the Dirac point.

Iron pnictide compounds have recently been shown to have superconducting properties. Xuet al. show that the superconducting gap of underdoped pnictides scales linearly with the transition temperature, and that a pseudogap develops with underdoping.

Investigating the inner structure of baryons is important to further our understanding of the strong interaction. Here, the BESIII Collaboration extracts the absolute value of the ratio of the electric to magnetic form factors and its relative phase for e + e − → J/ψ → ΛΣ decays, enhancing the signal thanks to the vacuum polarisation effect at the J/ψ peak.

The full potential of single-cell RNA-sequencing applied to precision medicine has yet to be reached. Here, we propose a drug recommendation system ASGARD, which predicts drugs by considering cell clusters to address the intercellular heterogeneity within each patient.

The popular genetically-encoded Ca²⁺ indicator, GCaMP, has several side-effects. Here the authors show that GCaMP containing CaM interferes with gating and signaling of L-type calcium channels, which disrupts Ca²⁺ dynamics and gene expression, and develop GCaMP-X to overcome these limitations.

Measurements of the electronic structure of a trilayer cuprate superconductor suggest that its high critical temperature is explained by the different doping levels of the layers. The combination of underdoped inner layer and overdoped outer layers supports superconductivity.

A consensus cell type atlas for the fly brain provides both an intellectual framework and open-source toolchains for brain-scale comparative connectomics.

Polarization observations of the fast radio burst FRB 180301 with the FAST radio telescope show diverse polarization angle swings, consistent with a magnetospheric origin of the emission.

The CMS Collaboration reports the study of three simultaneous hard interactions between quarks and gluons in proton–proton collisions. This manifests through the concurrent production of three J/ψ mesons, which consist of a charm-quark–antiquark pair.

Recently, superconductivity near 80 K was observed in La3Ni2O7 under high pressure, but the mechanism is debated. Here the authors report angle-resolved photoemission spectroscopy measurements under ambient pressure, revealing flat bands with strong electronic correlations that could be linked to superconductivity.

Sparse labelling and whole-brain imaging are used to reconstruct and classify brain-wide complete morphologies of 1,741 individual neurons in the mouse brain, revealing a dependence on both brain region and transcriptomic profile.

The authors present SVclone, a computational method for inferring the cancer cell fraction of structural variants from whole-genome sequencing data.

Here, Shao et. al attribute the reduction in bone mechano-responsiveness seen in type 2 diabetes to abnormal osteocytic calcium dynamics. They identify reduced SERCA2 pump activity as a mediator of this process and show that rescuing SERCA2 significantly improves bone mechanical adaptation in this context.

Analysis of cancer genome sequencing data has enabled the discovery of driver mutations. Here, as part of the ICGC/TCGA Pan-Cancer Analysis of Whole Genomes (PCAWG) Consortium the authors present DriverPower, a software package that identifies coding and non-coding driver mutations within cancer whole genomes via consideration of mutational burden and functional impact evidence.

The regenerative capacity of the lung in response to injury deteriorates with aging. Here, Raslan et al. discover that aging-associated progressive lung fibrosis is accompanied by persistent activation of blood vessels. The authors identified the vascular YAP/TrkB axis as a putative driver of this process and potential therapeutic target.

Here, the authors design NaNbO₃ based ceramics with the aim of enabling a field-induced reversible phase transformation between the antiferroelectric and ferroelectric phases, which manifests itself in a well-defined double hysteresis loop in the P-E hysteresis curve.