How the periodic table survived a war to secure chemistry’s future p.413

A century ago, the discovery of hafnium confirmed the validity of the periodic table — but only thanks to scientists who stood up for evidence at a time of global turmoil.

doi: 10.1038/d41586-023-00083-4

PhD training is no longer fit for purpose — it needs reform now p.414

If researchers are to meet society’s expectations, their training and mentoring must escape the nineteenth century.

doi: 10.1038/d41586-023-00084-3

Trial settles debate over best design for mRNA in COVID vaccines p.419

The biggest defender of ‘unmodified’ mRNA for vaccines against infectious disease has a change of heart.

doi: 10.1038/d41586-023-00042-z

Will Brazil’s President Lula keep his climate promises? p.420

The new president has already taken steps to protect the Amazon, but researchers call for more action.

doi: 10.1038/d41586-023-00011-6

Historic US research strike ends — but energizes a movement p.422

As University of California researchers return to work, union organizers say this is just the beginning of a nationwide push for better working conditions.

doi: 10.1038/d41586-023-00049-6

Abstracts written by ChatGPT fool scientists p.423

Researchers cannot always differentiate between AI-generated and original abstracts.

doi: 10.1038/d41586-023-00056-7

China’s COVID wave has probably peaked, model suggests p.424

But a lack of data is obscuring the true impact of the outbreak.

doi: 10.1038/d41586-023-00075-4

These ‘green pea’ galaxies might have helped to end the Universe’s dark age p.425

JWST has spotted three tiny, distant galaxies that could solve a long-standing cosmic mystery.

doi: 10.1038/d41586-023-00064-7

2022 was a record year for space launches p.426

180 rockets lifted off successfully, with SpaceX driving the pace.

doi: 10.1038/d41586-023-00048-7

How your first brush with COVID warps your immunity p.428

doi: 10.1038/d41586-023-00086-1

Metabolism dictates the pace of development across species p.439

Mouse and human embryos undergo similar developmental steps, but the exact timings differ. An analysis reveals that differences in metabolic activity set the timing of one such step on the road to formation of the vertebrae.

doi: 10.1038/d41586-022-04483-w

The β-selection step shapes T-cell identity p.440

T cells of the immune system develop through a lineage-commitment step followed by two checkpoints. The finding that the first checkpoint is needed to complete commitment offers a fresh perspective on T-cell development.

doi: 10.1038/d41586-023-00025-0

A neural strategy for directional behaviour p.442

How does a fruit fly’s brain determine which way the animal should escape in the face of a looming predator? A mechanism involving numeric gradients of synaptic connections between neurons provides an answer.

doi: 10.1038/d41586-022-04494-7

Vertical architecture improves performance of transistor family p.444

Organic electrochemical transistors could be better than conventional inorganic devices for certain uses, but have been held back by performance issues. The solution could be to build up these organic transistors like a sandwich.

doi: 10.1038/d41586-023-00026-z

Self-publishing is common among academic-journal editors p.445

An analysis of the publication records of academic editors shows that one-quarter of them publish 10% of their own papers in the journals they edit and reveals that fewer than 10% of editors-in-chief are women.

doi: 10.1038/d41586-023-00028-x

Broken mirror symmetry boosts current conversion in a superconductor p.446

The intrinsic structure of a material called a chiral superconductor enhances the separation of charge carriers, transforming an electric current in a way that could change the future of memory storage at low temperatures.

doi: 10.1038/d41586-023-00027-y

River ecosystem metabolism and carbon biogeochemistry in a changing world p.449

doi: 10.1038/s41586-022-05500-8

Stellar initial mass function varies with metallicity and time p.460

doi: 10.1038/s41586-022-05488-1

Magnetically mediated hole pairing in fermionic ladders of ultracold atoms p.463

doi: 10.1038/s41586-022-05437-y

Preparing random states and benchmarking with many-body quantum chaos p.468

doi: 10.1038/s41586-022-05442-1

Observation of intrinsic chiral bound states in the continuum p.474

doi: 10.1038/s41586-022-05467-6

Giant spin polarization and a pair of antiparallel spins in a chiral superconductor p.479

doi: 10.1038/s41586-022-05589-x

Room-temperature magnetoresistance in an all-antiferromagnetic tunnel junction p.485

doi: 10.1038/s41586-022-05461-y

Octupole-driven magnetoresistance in an antiferromagnetic tunnel junction p.490

doi: 10.1038/s41586-022-05463-w

Vertical organic electrochemical transistors for complementary circuits p.496

doi: 10.1038/s41586-022-05592-2

Modern temperatures in central–north Greenland warmest in past millennium p.503

doi: 10.1038/s41586-022-05517-z

FinnGen provides genetic insights from a well-phenotyped isolated population p.508

doi: 10.1038/s41586-022-05473-8

Mono- and biallelic variant effects on disease at biobank scale p.519

doi: 10.1038/s41586-022-05420-7

Financial incentives for vaccination do not have negative unintended consequences p.526

doi: 10.1038/s41586-022-05512-4

Synaptic gradients transform object location to action p.534

doi: 10.1038/s41586-022-05562-8

Structured cerebellar connectivity supports resilient pattern separation p.543

doi: 10.1038/s41586-022-05471-w

Metabolic regulation of species-specific developmental rates p.550

doi: 10.1038/s41586-022-05574-4

Multiple pathways for SARS-CoV-2 resistance to nirmatrelvir p.558

doi: 10.1038/s41586-022-05514-2

Pre-T cell receptor self-MHC sampling restricts thymocyte dedifferentiation p.565

doi: 10.1038/s41586-022-05555-7

A quantitative map of nuclear pore assembly reveals two distinct mechanisms p.575

doi: 10.1038/s41586-022-05528-w

RNA targeting unleashes indiscriminate nuclease activity of CRISPR–Cas12a2 p.582

doi: 10.1038/s41586-022-05560-w

Cas12a2 elicits abortive infection through RNA-triggered destruction of dsDNA p.588

doi: 10.1038/s41586-022-05559-3

Cryo-EM structures of the active NLRP3 inflammasome disc p.595

doi: 10.1038/s41586-022-05570-8