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Volume 537 Issue 7621

Editorials

News

News Features

Science and inequality p.465

A special issue explores the study of inequality, and how socio-economic divides affect the science workforce.

doi: 10.1038/537465a

News & Views

Structure of aggregates revealed p.492

A technical feat achieved by two independent groups has enabled resolution of the molecular structure of a form of the amyloid-β protein that is thought to play a major part in Alzheimer's disease.

doi: 10.1038/nature19470

Motion controlled by sound p.493

A simple technique has been developed that produces holograms made of sound waves. These acoustic landscapes are used to manipulate microscale objects, and offer great potential in medical imaging and selective heating. See Letter p.518

doi: 10.1038/537493a

Panoramic views of the early epigenome p.494

Four studies detail changes in how DNA is wrapped around histone proteins and in molecular modifications to histones that occur after fertilization. The results shed light on the early regulation of gene expression. See Letters p.548, p.553 & p.558

doi: 10.1038/nature19468

Migration of giants p.496

The origin of hot Jupiters, large gaseous planets in close orbits around stars, is unknown. Observations suggest that such planets are abundant in stellar clusters, and can result from encounters with other celestial bodies.

doi: 10.1038/nature19430

Channelling potassium to fight cancer p.497

Potassium released from dying tumour cells has now been found to suppress the activity of T cells of the immune system. Enhancing the removal of potassium from T cells restores their ability to attack cancer. See Letter p.539

doi: 10.1038/nature19467

Multitasking materials from atomic templates p.499

Two 'failed' materials can perform much better when united. Such a combination exhibits magnetization and electric polarization up to room temperature, providing a basis for new magnetoelectric devices. See Letter p.523

doi: 10.1038/537499a

Evidence of life in Earth's oldest rocks p.500

When did life first arise on Earth? Analysis of ancient rocks in Greenland that contain structures interpreted as bacterial in origin suggest that Earth might have been an abode for life much earlier than previously thought. See Letter p.535

doi: 10.1038/nature19429

Articles

Letters

Holograms for acoustics p.518

Holograms for sound waves, encoded in a 3D printed plate, are used to shape sound fields that can be used for the contactless manipulation of objects.

doi: 10.1038/nature19755

Switching on electrocatalytic activity in solid oxide cells p.528

A new way of activating the electrodes in solid oxide cells involves applying an electrical potential to trigger the exsolution of metal catalysts to the electrode surface; the success of this technique raises the possibility of regenerating the electrodes during operation.

doi: 10.1038/nature19090