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Nature is the international weekly journal of science: a magazine style journal that publishes full-length research papers in all disciplines of science, as well as News and Views, reviews, news, features, commentaries, web focuses and more, covering all branches of science and how science impacts upon all aspects of society and life.
Scientists have a valuable part to play in clarifying the impacts of a proposed trade treaty between the United States and Europe.

Sleeping-beauty papers offer hope that authors of uncited works are in good company.

A package of articles in Nature assesses the state of artificial-intelligence research.

Insects are an excellent source of sustainable protein, but people will only be persuaded to eat them if they seem appealing, says Ophelia Deroy.

After a 3.5-year voyage at sea, scientists have discovered more than 100,000 new eukaryotic organisms, many existing in symbiotic relationships with each other.Scientists aboard the research schooner Tara collected some 35,000 ocean samples at 210 locations around the world, from as deep as

Dormant stem cells — and the signals that activate them — are widespread across surfaces in adult mouse brains.Yi Eve Sun and Siguang Li of Tongji University School of Medicine in Shanghai, China, and their colleagues analysed patterns of gene expression in individual cells

One-million-year-old air extracted from bubbles in an Antarctic ice core has enabled the reconstruction of the oldest atmospheric compositions yet studied.Glaciers flowing over raised bedrock in Allan Hills, Antarctica, brought long-sought-after blue ice near to the surface, providing an accessible source of ancient air.

High-resolution microscopes have captured images of cancer cells transferring biological material to less-malignant cells, making these cells more cancerous.Many cells, including cancerous ones, shed tiny membrane-bound sacs called vesicles that contain a variety of molecules including RNA; these sacs are then taken up by

Shrinking Arctic sea ice leads to heavier snows in western Siberia. This is some of the first evidence for how low sea-ice levels in the Arctic autumn affect precipitation in neighbouring regions the following winter.A team led by Martin Wegmann at the University of

A crow species renowned for its use of tools has a time-saving trick — stashing the same tool for future use.New Caledonian crows (Corvus moneduloides) invest much time and energy turning sticks into hooks to extract food from small cavities. To see

More than one-quarter of cells in ageing, sun-exposed skin carry mutations that are known to drive cancer — even though the skin continues to function normally.To understand how healthy cells can mutate to form cancers, Philip Jones of the University of Cambridge, UK, Peter

A compound found in the roots of the 'thunder god' vine could be a weight-loss drug, a study in mice suggests.Umut Ozcan of Boston Children's Hospital in Massachusetts and his colleagues used a database of gene expression in human cells treated with various molecules

Using a 3D printer, researchers have created spider-web analogues out of elastic polymer threads and tweaked their architectures to maximize the webs' strength.Markus Buehler at the Massachusetts Institute of Technology in Cambridge and his colleagues printed synthetic webs (pictured) and added various

Reanalysis of a study that compared gene expression in mice and humans tests social media as a forum for discussing research results.

Europe’s wild birds are in peril; the LHC breaks an energy record; and Nobel-prizewinning mathematician John Nash dies.

Proposed deals have potential to boost research, but also to weaken health and environmental protections.

From predatory microbes to toxic metals, nature is inspiring new ways to treat infections.

Independent assessments of national climate plans find little common ground between wealthy and developing countries.

Public-health officials make plans for how to speed up responses to tropical-disease outbreaks.

Papers authored by Paolo Macchiarini misrepresented success of pioneering procedure.

Long a staple of science fiction, laser weapons are edging closer to the battlefield — thanks to optical fibres.

By revealing that fish cooperate, cheat and punish, Redouan Bshary has challenged ideas about brain evolution.

Four leading researchers share their concerns and solutions for reducing societal risks from intelligent machines.

Philip Ball examines a study unpicking the broad ramifications of information flows.

Barbara Kiser reviews five of the week's best science picks.

Derek Lowe relishes a celebration of the lab on its long march through time.

A rare brass microscope was discovered in mud dredged from canals in Delft, the Netherlands, in December 2014. The instrument (pictured, left) is thought to have been made by Dutch pioneer microscopist Antony van Leeuwenhoek (1632–1723; see P.BallNature520, 156;10.1038/520156a

Deforestation of the Brazilian Amazon is on the rise and not declining as you imply (Nature520, 20–23;10.1038/520020a2015). Forest clearance has exploded since August 2014, according to satellite data from Brazil's National Institute for Space Research and

In assessing the next generation of plant-breeding techniques such as gene editing (Nature520, 131–132;10.1038/520131b2015), the European Union (EU) should take into account criticisms of its current regulatory system for new crop varieties.Last year's statement by

Scotland's government has responsibility for nature conservation in 61% of UK waters. As programme manager for the Marine Conservation Society in Scotland, I agree that the United Kingdom and its devolved governments should be making marine conservation a priority (see also Nature520, 585

Most scientists who study disease carry out their research with an eye to treating others — but a few have only to look at their own bodies to feel the need for a cure.

A microbiologist dispenses career advice for his postdocs, but they had better bring their own funding.

When the phrase 'artificial intelligence' was first coined in 1956 by computer scientists, expectations for the development of machines with human-like intelligent reasoning and behaviour were high, but the field was in for a long wait. In the decades to come, the term referred largely

Deep learning allows computational models that are composed of multiple processing layers to learn representations of data with multiple levels of abstraction. These methods have dramatically improved the state-of-the-art in speech recognition, visual object recognition, object detection and many other domains such as drug discovery

Reinforcement learning is a branch of machine learning concerned with using experience gained through interacting with the world and evaluative feedback to improve a system's ability to make behavioural decisions. It has been called the artificial intelligence problem in a microcosm because learning algorithms must

How can a machine learn from experience? Probabilistic modelling provides a framework for understanding what learning is, and has therefore emerged as one of the principal theoretical and practical approaches for designing machines that learn from data acquired through experience. The probabilistic framework, which describes

We are witnessing the advent of a new era of robots — drones — that can autonomously fly in natural and man-made environments. These robots, often associated with defence applications, could have a major impact on civilian tasks, including transportation, communication, agriculture, disaster mitigation and

Conventionally, engineers have employed rigid materials to fabricate precise, predictable robotic systems, which are easily modelled as rigid members connected at discrete joints. Natural systems, however, often match or exceed the performance of robotic systems with deformable bodies. Cephalopods, for example, achieve amazing feats of

Evolution has provided a source of inspiration for algorithm designers since the birth of computers. The resulting field, evolutionary computation, has been successful in solving engineering tasks ranging in outlook from the molecular to the astronomical. Today, the field is entering a new phase as

A guide to the next stage of your life.

The map in the News Feature ‘India by the numbers’ (Nature521, 142–143; 2015) omitted the province of Meghalaya. The full map can be seen at go.nature.com/h2ydqb.

The Correspondence 'Interim initiative for health in Iran' (Nature521, 32;10.1038/521032e2015) wrongly implied that A. A. Velayati is a volunteer for non-profit group IAPA; only H. Jamaati and S. M. Hashemian are IAPA volunteers.

An evolutionary algorithm has been developed that allows robots to adapt to unforeseen change. The robots learn behaviours quickly and instinctively by mining the memory of their past achievements. See Letter p.503

Proteins can be transported in either direction across a cellular organelle called the Golgi apparatus. It emerges that CDC42, a molecule that confers cell polarity, acts to control the directionality of transport in the Golgi. See Letter p.529

An index of water-circulation strength in the North Atlantic Ocean has been derived from sea-level measurements. This provides fresh evidence of the ocean's leading role in multidecadal climate variability. See Letter p.508

Many people with cancer die from a wasting disorder called cancer-associated cachexia. Two studies in fruit flies show that inhibition of insulin signalling causes cachexia-like organ wasting.

Modelling of the interactions between antibiotic production and antibiotic degradation reveals that these opposing activities are key to maintaining diversity in microbial communities. See Letter p.516

New hominin fossils discovered in Ethiopia, dated to between 3.5 million and 3.3 million years ago, suggest that species diversity may have been as high during early human evolution as in later periods. See Article p.483

Middle Pliocene hominin species diversity has been a subject of debate over the past two decades, particularly after the naming of Australopithecus bahrelghazali and Kenyanthropus platyops in addition to the well-known species Australopithecus afarensis. Further analyses continue to support the proposal that

Patients with high-grade serous ovarian cancer (HGSC) have experienced little improvement in overall survival, and standard treatment has not advanced beyond platinum-based combination chemotherapy, during the past 30 years. To understand the drivers of clinical phenotypes better, here we use whole-genome sequencing of tumour and