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First-instar orchid mantis nymphs avoid predators by mimicking black-red assassin bugs, whereas those in later instars avoid predators and attract prey by camouflaging themselves as lighter-coloured flowers. Here the authors use developmental transcriptomics, evolutionary genomics and predation experiments to reveal that this ontogenetic colour change is regulated by a pigment transporter called Redboy that emerged in Polyneoptera 284–197 million years ago.

The symmetry and mechanism underlying unconventional charge orders in Kagome materials are under debate. Here, the authors uncover a longitudinal and helicity-dependent photocurrent in KV₃Sb₅ that indicates broken symmetries and intrinsic chirality.

A Z-type ZnO@COF heterostructure composite with excellent piezoelectric properties was synthesized for the piezocatalytic uranium extraction from seawater, helping to realize efficient uranium extraction by wave energy

The synthesis of ionic olefin linked threedimensional covalent organic frameworks (3D COFs) is challenging because of the difficulties in forming stable carbon-carbon double bonds. Here, the authors report a general synthesis of an ionic sp² carbon linked COFs and demonstrate selective capture of ReO₄⁻ ions.

Single-atomic impurities may induce novel quantum state, but they are unexplored in topological magnets. Here, the authors report spin-down polarized bound states which further interact with neighboring states to form spin-orbit split quantized orbitals in a topological magnet Co₃Sn₂S₂.

The pairing mechanism in kagome superconductors is still not fully understood. Now, CsV₃Sb₅, which belongs to this family, is shown to have orbital-selective pairing with two distinct superconducting domes that are not separated by any phase boundary.

‘Extrachromosomal DNA has been previously linked to tumour progression and heterogeneity, but its potential as a cancer biomarker has not been fully explored. Here, the authors develop a computational framework to refine genomic subtypes and predict response to immunotherapy in gastrointestinal cancer.

The intratumor microbiota in pancreatic cancer has been described as pro-tumorigenic. Here the authors modify the probiotic Lactobacillus rhamnosus GG with a gallium-polyphenol network and chitosan nanocoating, showing accumulation in pancreatic lesions and modulation of the intratumor microbiota, eliciting anti-tumor immune response in preclinical models.

Topological boundary modes within charge-ordered states have not yet been observed experimentally. Now an in-gap boundary mode, stemming solely from the charge order, is visualized in the topological material Ta₂Se₈I.

Scanning tunnelling microscopy and scanning tunnelling spectroscopy have been used to observe intra-unit-cell nematic order and associated Fermi surface deformation in ScV₆Sn₆.

Topologically protected hinge modes could be important for developing quantum devices, but electronic transport through those states has not been demonstrated. Now quantum transport has been shown in gapless topological hinge states.

Using normal and Josephson scanning tunnelling microscopy, chiral kagome superconductivity modulations with corresponding residual Fermi arcs are detected in KV₃Sb₅ and CsV₃Sb₅.

The authors provide a comprehensive characterization of the human antibody response to a licensed hepatitis E virus (HEV) vaccine, Hecolin, in four individuals over the course of six months post vaccination. They demonstrate diverse patterns of antibody response underlying the vaccine protection.

The interplay of magnetism, various symmetries and correlations can lead to intriguing physics in the solid state. Here, the authors report signatures of a Hund nodal line in the antiferromagnet YMn₂Ge₂.

Dysregulated prefrontal control over amygdala has been implicated in the etiology of stress-related psychiatric disorders. Here, the authors show that the dysregulation preferentially occurs in amygdala neurons that are mono- but not bi-directionally connected with dorsomedial prefrontal cortex.

An unconventional chiral charge order is observed in a kagome superconductor by scanning tunnelling microscopy. This charge order has unusual magnetic tunability and intertwines with electronic topology.

Scanning tunnelling microscopy is used to reveal a new topological kagome magnet with an intrinsic Chern quantum phase, which shows a distinct Landau fan structure with a large Chern gap.

A hybrid topological phase of matter is discovered in the simple elemental-solid arsenic and explored using tunnelling microscopy, photoemission spectroscopy and a theoretical analysis.

The authors show that a magnetic material with kagome lattice planes hosts a flat band near the Fermi level. Electrons in this band exhibit ‘negative magnetism’ due to the Berry curvature.

We show that an insulating bulk state and helical edge state coexist in Bi₄Br₄ and that this coexistence persists up to room temperature.

Elucidating the nature of topological magnets is at quantum frontier. Here the authors report a topological charge-entropy relation in TbMn₆Sn₆ that goes beyond conventional electron behavior and points to a transport visualization of Chern gapped Dirac fermions.

The search for magnetic Weyl fermion remains a challenge. Here, the authors report angle-resolved photoemission spectroscopy and magnetotransport measurements resolving the topological properties of Weyl fermion quasiparticles in magnetic non-centrosymmetric crystal PrAlGe.

Serum-resistant bacteria can escape complement killing in the bloodstream. Here, using metabolomics and metabolite perturbations, the authors describe an altered metabolic state in serum-resistant Escherichia coli and show that exogenous glycine potentiates elimination of pathogenic bacteria in vivo.

The topological magnet Fe₃Sn₂ exhibits a giant nematic energy shift of a many-body electronic state, demonstrating anisotropic spin–orbit tunability.

Achalasia is a rare motility disorder of the esophagus resulting from abnormal immune responses, but the immunologic mechanism is unclear. Here the authors use scRNA-seq of PBMC and esophageal lower sphincter tissue and find C1QC⁺ macrophages and tissue-resident memory T cells with expanded compositions and altered transcriptional profiles in achalasia.

A study combining spectroscopy and mathematical topology  reports the observation of linked node loops in a quantum magnet, with properties suggesting a Seifert bulk–boundary correspondence.

Zeolite Cu(I)Y is attractive for adsorptive removal of sulfur compounds from fuel, however practical application is limited by instability of Cu(I). Here the authors use a coating to achieve superhydrophobicity in the zeolite, leading to improved Cu(I) stability against oxidation and thiophene removal.

Angle-resolved photoemission spectroscopy measurements reveal that CoSi and RhSi are nearly ideal topological conductors, with structural chirality and surface helicoid arcs of topological charge ±2 arising from bulk multifold chiral states.

Weyl fermions have yet to be observed as elementary particles but can be realized in topological quantum materials. This Review discusses the theoretical and experimental discovery of emergent Weyl fermions, high-fold chiral fermions, topological Weyl lines and related Dirac phases.