Three-year trial shows support for recognizing peer reviewers p.275

Thousands of Nature referees have chosen to be publicly acknowledged.

doi: 10.1038/d41586-019-01162-1

Working with marginalized groups demands time and respect — and researchers must give both p.275

All those in the research enterprise must support efforts to conduct just, equitable and inclusive research.

doi: 10.1038/d41586-019-01163-0

Pig brains kept alive outside body for hours after death p.283

doi: 10.1038/d41586-019-01216-4

Black hole pictured for first time — in spectacular detail p.284

The Event Horizon Telescope’s global network of radio dishes has produced the first-ever direct image of a black hole and its event horizon.

doi: 10.1038/d41586-019-01155-0

Israeli spacecraft Beresheet crashes into the Moon p.286

US$100-million lander had sought to become the first privately funded craft to touch down on the lunar surface.

doi: 10.1038/d41586-019-01199-2

Indonesian mega-science agency in the balance as election begins p.286

President Joko Widodo wants to create a single agency to control most research and its funding.

doi: 10.1038/d41586-019-01160-3

Mexican ecologists push to transform prison island into nature reserve p.287

Waters surrounding Isla María Madre host vibrant coral reefs that have stayed relatively untouched for over 100 years.

doi: 10.1038/d41586-019-01030-y

Facing up to injustice in genome science p.290

doi: 10.1038/d41586-019-01166-x

Indigenous groups look to ancient DNA to bring their ancestors home p.294

doi: 10.1038/d41586-019-01167-w

Elimination of unfit cells in young and ageing skin p.318

Cell competition in the skin promotes tissue youthfulness, but the same process later leads to skin ageing. This finding helps to explain how skin is maintained, and uncovers potential anti-ageing therapeutic targets.

doi: 10.1038/d41586-019-00825-3

A closer look at lightning reveals needle-like structures p.319

doi: 10.1038/d41586-019-01178-7

Conformation of the native HIV-1 envelope protein raises questions for vaccine design p.321

The HIV-1 envelope protein is the target of antibodies that neutralize the virus. A fresh look into the conformational states of this protein relaunches the quest to identify those relevant for vaccine design.

doi: 10.1038/d41586-019-01085-x

Electrifying skyrmion bubbles p.322

doi: 10.1038/d41586-019-01139-0

A mouse model for the most common form of heart failure p.324

A mouse model that replicates the clinical features of the most common form of heart failure opens a window on the mechanisms underlying this disease, and could help scientists to explore future therapies.

doi: 10.1038/d41586-019-00983-4

Machine-learning techniques used to accurately predict battery life p.325

Highly reliable methods for predicting battery lives are needed to develop safe, long-lasting battery systems. Accurate predictive models have been developed using data collected from batteries early in their lifetime.

doi: 10.1038/d41586-019-01138-1

Multi-faceted particle pumps drive carbon sequestration in the ocean p.327

doi: 10.1038/s41586-019-1098-2

Restoration of brain circulation and cellular functions hours post-mortem p.336

doi: 10.1038/s41586-019-1099-1

Stem cell competition orchestrates skin homeostasis and ageing p.344

doi: 10.1038/s41586-019-1085-7

Nitrosative stress drives heart failure with preserved ejection fraction p.351

doi: 10.1038/s41586-019-1100-z

Astrophysical detection of the helium hydride ion HeH⁺ p.357

doi: 10.1038/s41586-019-1090-x

Needle-like structures discovered on positively charged lightning branches p.360

doi: 10.1038/s41586-019-1086-6

Measurement of quantum back action in the audio band at room temperature p.364

doi: 10.1038/s41586-019-1051-4

Observation of room-temperature polar skyrmions p.368

doi: 10.1038/s41586-019-1092-8

Broadband electro-optic frequency comb generation in a lithium niobate microring resonator p.373

doi: 10.1038/s41586-019-1008-7

Resonant electro-optic frequency comb p.378

doi: 10.1038/s41586-019-1110-x

Global glacier mass changes and their contributions to sea-level rise from 1961 to 2016 p.382

doi: 10.1038/s41586-019-1071-0

Global warming impairs stock–recruitment dynamics of corals p.387

doi: 10.1038/s41586-019-1081-y

Mapping changes in housing in sub-Saharan Africa from 2000 to 2015 p.391

doi: 10.1038/s41586-019-1050-5

Attachment of the blastoderm to the vitelline envelope affects gastrulation of insects p.395

doi: 10.1038/s41586-019-1044-3

Object-vector coding in the medial entorhinal cortex p.400

doi: 10.1038/s41586-019-1077-7

Innate lymphoid cells support regulatory T cells in the intestine through interleukin-2 p.405

doi: 10.1038/s41586-019-1082-x

Syndecan 1 is a critical mediator of macropinocytosis in pancreatic cancer p.410

doi: 10.1038/s41586-019-1062-1

Associating HIV-1 envelope glycoprotein structures with states on the virus observed by smFRET p.415

doi: 10.1038/s41586-019-1101-y

Novel tau filament fold in chronic traumatic encephalopathy encloses hydrophobic molecules p.420

doi: 10.1038/s41586-019-1026-5