What Europe is getting right about research p.455

doi: 10.1038/d41586-019-01561-4

Enter Nature’s essay competition p.455

doi: 10.1038/d41586-019-01562-3

Mystery of deadly Indonesian tsunami cracked using social-media videos p.463

The findings expose the deficiencies of tsunami warning systems, as well as highlighting the power of citizen science.

doi: 10.1038/d41586-019-01544-5

Long-term studies will track indelible marks of first flu p.464

Immunological imprinting could provide hints to development of better vaccines.

doi: 10.1038/d41586-019-01524-9

Harassment survivors demand stronger action by US biomedical agency p.465

Women recounted their experiences at a meeting organized by the National Institutes of Health.

doi: 10.1038/d41586-019-01602-y

Italian physicists to stand trial for conditions in underground lab p.466

The Gran Sasso National Laboratories have seen no major accidents so far, but prosecutors charge that environmental controls were lax.

doi: 10.1038/d41586-019-01552-5

The devastating biological consequences of homelessness p.467

Understanding why living on the street seems to cause rapid aging could help homeless people — and governments.

doi: 10.1038/d41586-019-01573-0

The future of science in Europe p.469

doi: 10.1038/d41586-019-01540-9

Science in Europe: by the numbers p.470

doi: 10.1038/d41586-019-01565-0

How European scientists will spend €100 billion p.472

doi: 10.1038/d41586-019-01566-z

Europe’s controversial plans to expand defence research p.476

doi: 10.1038/d41586-019-01567-y

An ‘on’ switch for proteins p.490

Current methods for producing proteins that can be activated by light require knowledge of the protein’s active site, or can reduce the protein’s functionality. A technique that overcomes these issues has been devised.

doi: 10.1038/d41586-019-01394-1

Superconductivity near room temperature p.491

doi: 10.1038/d41586-019-01583-y

Construction of an Escherichia coli genome with fewer codons sets records p.492

The biggest synthetic genome so far has been made, with a smaller set of amino-acid-encoding codons than usual — raising the prospect of encoding proteins that contain unnatural amino-acid residues.

doi: 10.1038/d41586-019-01584-x

Quantum gases show flashes of a supersolid p.494

Supersolids are highly sought-after structures whose atoms can simultaneously support frictionless flow and form a crystal. Hallmarks of a supersolid have now been observed in three experiments that involve quantum gases of dipolar atoms.

doi: 10.1038/d41586-019-01585-w

A twist in the tale of the structure of ice p.495

doi: 10.1038/d41586-019-01586-9

Distinct modes of cell competition shape mammalian tissue morphogenesis p.497

doi: 10.1038/s41586-019-1199-y

Next-generation characterization of the Cancer Cell Line Encyclopedia p.503

doi: 10.1038/s41586-019-1186-3

Time-resolved protein activation by proximal decaging in living systems p.509

doi: 10.1038/s41586-019-1188-1

Total synthesis of Escherichia coli with a recoded genome p.514

doi: 10.1038/s41586-019-1192-5

Fast and inefficient star formation due to short-lived molecular clouds and rapid feedback p.519

doi: 10.1038/s41586-019-1194-3

The rheology and thermal history of Mars revealed by the orbital evolution of Phobos p.523

doi: 10.1038/s41586-019-1202-7

Superconductivity at 250 K in lanthanum hydride under high pressures p.528

doi: 10.1038/s41586-019-1201-8

Fidelity benchmarks for two-qubit gates in silicon p.532

doi: 10.1038/s41586-019-1197-0

Three-dimensional quantum Hall effect and metal–insulator transition in ZrTe₅ p.537

doi: 10.1038/s41586-019-1180-9

Absence of amorphous forms when ice is compressed at low temperature p.542

doi: 10.1038/s41586-019-1204-5

Increase in CFC-11 emissions from eastern China based on atmospheric observations p.546

doi: 10.1038/s41586-019-1193-4

Industrial-era decline in subarctic Atlantic productivity p.551

doi: 10.1038/s41586-019-1181-8

Neurocranial development of the coelacanth and the evolution of the sarcopterygian head p.556

doi: 10.1038/s41586-019-1117-3

Genomic characterization of metastatic breast cancers p.560

doi: 10.1038/s41586-019-1056-z

SR-B1 drives endothelial cell LDL transcytosis via DOCK4 to promote atherosclerosis p.565

doi: 10.1038/s41586-019-1140-4

NAD metabolic dependency in cancer is shaped by gene amplification and enhancer remodelling p.570

doi: 10.1038/s41586-019-1150-2

Epigenetic evolution and lineage histories of chronic lymphocytic leukaemia p.576

doi: 10.1038/s41586-019-1198-z

A vitamin C-derived DNA modification catalysed by an algal TET homologue p.581

doi: 10.1038/s41586-019-1160-0