Australia: show the world what climate action looks like p.449

The fires are a wake-up call. The country’s leaders must now act on overwhelming evidence and public opinion.

doi: 10.1038/d41586-020-00152-y

Stop the Wuhan virus p.450

Vigilance, preparedness, speed, transparency and global coordination are now crucial to stopping a new infectious disease from becoming a global emergency.

doi: 10.1038/d41586-020-00153-x

How the fight over a Hawaii mega-telescope could change astronomy p.457

Thirty Meter Telescope controversy is forcing scientists to grapple with how their research affects Indigenous peoples.

doi: 10.1038/d41586-020-00076-7

Supercomputer scours fossil record for Earth’s hidden extinctions p.458

Palaeontologists have charted 300 million years of Earth’s history in breathtaking detail.

doi: 10.1038/d41586-020-00117-1

Research on embryo-like structures struggles to win US government funding p.459

Biologists say they need clearer guidelines on funding rules for this nascent field.

doi: 10.1038/d41586-020-00127-z

Stress, anxiety, harassment: huge survey reveals pressures of scientists’ working lives p.460

Global study highlights long hours, poor job security and mental-health struggles.

doi: 10.1038/d41586-020-00101-9

How ‘spooky’ is quantum physics? The answer could be incalculable p.461

Proof at the nexus of pure mathematics and algorithms puts ‘quantum weirdness’ on a whole new level.

doi: 10.1038/d41586-020-00120-6

The chemists policing Earth’s atmosphere for rogue pollution p.464

doi: 10.1038/d41586-020-00110-8

Human activities have changed the shapes of river deltas p.473

doi: 10.1038/d41586-020-00047-y

New predictors for immunotherapy responses sharpen our view of the tumour microenvironment p.474

Three studies reveal that the presence in tumours of two key immune components — B cells and tertiary lymphoid structures — is associated with favourable outcomes when individuals undergo immunotherapy.

doi: 10.1038/d41586-019-03943-0

Large African herbivores have helped to repair their environment p.476

The reintroduction of ruminant herbivores to a national park in Mozambique has controlled the encroachment of a notoriously invasive plant species.

doi: 10.1038/d41586-020-00093-6

Versatile strategy for making 2D materials p.477

doi: 10.1038/d41586-020-00094-5

Meet the relatives of our cellular ancestor p.478

Microorganisms related to lineages of the Asgard archaea group are thought to have evolved into complex eukaryotic cells. Now the first Asgard archaeal species to be grown in the laboratory reveals its metabolism and cell biology.

doi: 10.1038/d41586-020-00039-y

Signatures of self-organized criticality in an ultracold atomic gas p.481

doi: 10.1038/s41586-019-1908-6

Fast two-qubit logic with holes in germanium p.487

doi: 10.1038/s41586-019-1919-3

Conversion of non-van der Waals solids to 2D transition-metal chalcogenides p.492

doi: 10.1038/s41586-019-1904-x

Antagonistic cooperativity between crystal growth modifiers p.497

doi: 10.1038/s41586-019-1918-4

Superstructure control of first-cycle voltage hysteresis in oxygen-redox cathodes p.502

doi: 10.1038/s41586-019-1854-3

Molecular tuning of CO₂-to-ethylene conversion p.509

doi: 10.1038/s41586-019-1782-2

Global-scale human impact on delta morphology has led to net land area gain p.514

doi: 10.1038/s41586-019-1905-9

Isolation of an archaeon at the prokaryote–eukaryote interface p.519

doi: 10.1038/s41586-019-1916-6

Nearest neighbours reveal fast and slow components of motor learning p.526

doi: 10.1038/s41586-019-1892-x

Decoding the development of the human hippocampus p.531

doi: 10.1038/s41586-019-1917-5

A developmental landscape of 3D-cultured human pre-gastrulation embryos p.537

doi: 10.1038/s41586-019-1875-y

Microbiota-targeted maternal antibodies protect neonates from enteric infection p.543

doi: 10.1038/s41586-019-1898-4

B cells and tertiary lymphoid structures promote immunotherapy response p.549

doi: 10.1038/s41586-019-1922-8

B cells are associated with survival and immunotherapy response in sarcoma p.556

doi: 10.1038/s41586-019-1906-8

Tertiary lymphoid structures improve immunotherapy and survival in melanoma p.561

doi: 10.1038/s41586-019-1914-8

TGF-β orchestrates fibrogenic and developmental EMTs via the RAS effector RREB1 p.566

doi: 10.1038/s41586-019-1897-5

An anti-CRISPR viral ring nuclease subverts type III CRISPR immunity p.572

doi: 10.1038/s41586-019-1909-5

H2A.Z facilitates licensing and activation of early replication origins p.576

doi: 10.1038/s41586-019-1877-9