712,639 articles

'Jumping genes' help stabilize DNA folding patterns

"Jumping genes"—bits of DNA that can move from one spot in the genome to another—are well-known for increasing genetic diversity over the long course of evolution. Now, new research at Washington University School of Medicine in St. Louis indicates that such genes, also called transposable elements, play another, more surprising role: stabilizing the 3-D folding patterns of the DNA molecule...

Remarkable Walking Sharks Are Strutting All Over and Here’s Their Deal

Scientists have discovered four new species of walking sharks proving the ocean somehow can always seem a little more mysterious. According to a study published in the Marine and Freshwater Research journal on Tuesday, the Hemiscylliidae genus of sharks “walk” using their pectoral and pelvic fins to move across the ocean floor and live in coastal waters around northern Australia and...

We can’t trust the billionaires of Davos to solve a climate crisis they created | Payal Parekh

It’s time to turn away from the World Economic Forum and its mass-polluting ‘affiliates’. We need new, radical solutions• Payal Parekh is an international climate activistThis week, among the private chalets and deep snow of Davos, the world’s leading politicians and businesspeople have been spending their time at the World Economic Forum (WEF), and they’ve been talking about the...

A new twist on quantum communication in fiber

New research done at the University of the Witwatersrand in Johannesburg, South Africa, and Huazhang University of Science and Technology in Wuhan, China, has exciting implications for secure data transfer across optical fiber networks. The team have demonstrated that multiple quantum patterns of twisted light can be transmitted across a conventional fiber link that, paradoxically, supports only...

Principles for a green chemistry future

In the most recent issue of the academic journal Science, the case is made for a future where the materials and chemicals that make up the basis of our society and our economy are healthful rather than toxic, renewable rather than depleting, and degradable rather than persistent.

Shaping the social networks of neurons

The three proteins teneurin, latrophilin and FLRT hold together and bring neighboring neurons into close contact, enabling the formation of synapses and the exchange of information between the cells. In the early phase of brain development, however, the interaction of the same proteins leads to the repulsion of migrating nerve cells, as researchers from the Max Planck Institute of Neurobiology and...

With a protein 'delivery,' parasite can suppress its host's immune response

Toxoplasma gondii is best known as the parasite that may lurk in a cat's litter box. Nearly a third of the world's population is believed to live with a chronic Toxoplasma infection. It's of greatest concern, however, to people with suppressed immune systems and to pregnant women, who can pass the infection to their fetuses.

Dance of the honey bee reveals fondness for strawberries

Bees are pollinators of many wild and crop plants, but in many places their diversity and density is declining. A research team from the Universities of Göttingen, Sussex and Würzburg has now investigated the foraging behaviour of bees in agricultural landscapes. To do this, the scientists analysed the bees' dances, which are called the "waggle dance." They found out that honey bees prefer...

Increasing opportunities for sustainable behavior

To mitigate climate change and safeguard ecosystems, we need to make drastic changes in our consumption and transport behaviors. A new IIASA study shows how even minor changes to available infrastructure can trigger tipping points in the collective adoption of sustainable behaviors.

Lessons from Sars outbreak help in race for coronavirus vaccine

Companies aim to have vaccine in production within 16 weeks before entering testing stageThere are no vaccines or treatments approved for the new coronavirus, but the race is on to develop one.This week the Coalition for Epidemic Preparedness Innovations (Cepi) announced it would commit $11m (£8.4m) to three programmes led by the companies Inovio Pharmaceuticals, Moderna and the University of...

Storm Gloria claims 12 lives in Spain, four missing

A violent storm which wrought havoc across huge swathes of Spain's eastern and southern coastline this week claimed 12 lives and left four others missing, Prime Minister Pedro Sanchez said Friday, blaming climate change for the extreme weather.

Deciphering the sugar code

Like animals and humans, plants possess a kind of immune system. It can e.g. recognize pathogenic fungi by the chitin in their cell walls, triggering disease resistance. Some fungi hide from the immune system by modifying some of the chitin building blocks, converting chitin into chitosan. Researchers of the University of Münster now found that plants can react to a certain pattern in this...

Researchers explain how disorder in tiny crystals enables heat-therapeutic systems

A new research study at the Institute of Electronic Structure and Lasers (IESL) of the Foundation for Research and Technology-Hellas (FORTH) finds that minute crystals, many thousand times smaller than a particle of dust, when they are dressed by the right kind of imperfections, adjust their electronic properties to favorably convert energy into heat, an important attribute for potential use in...

NASA's Kepler witnesses vampire star system undergoing super-outburst

NASA's Kepler spacecraft was designed to find exoplanets by looking for stars that dim as a planet crosses the star's face. Fortuitously, the same design makes it ideal for spotting other astronomical transients—objects that brighten or dim over time. A new search of Kepler archival data has uncovered an unusual super-outburst from a previously unknown dwarf nova. The system brightened by a...

Coronavirus: second confirmed US case identified in Chicago

Individual recently travelled from the Wuhan region of China, where the virus is believed to originateLive updates on the coronavirus outbreakA traveler in Chicago has been identified as the US’s second confirmed case of the coronavirus. The Illinois department of health has confirmed the latest diagnosis to local news radio station WBBM.According to health officials, the individual recently...

The regulators active during iron deficiency

Iron deficiency is a critical situation for plants, which respond using specific genetic programmes. Biologists from Heinrich Heine University Düsseldorf (HHU) and Michigan State University (MSU) used artificial intelligence methods to examine how to predict regulatory genetic sequences. They have now published the findings from their joint research work in the journal Plant Physiology.

Inequality is bad for society, economic prosperity good

Rich countries vary a lot when it comes to health and social problems. A comparison of social ills ranging from intentional homicides to obesity rates in 40 rich societies shows that Asian and European countries fare much better than Anglophone and Latin American countries. The most problem-ridden countries are Trinidad and Tobago, Uruguay and the United States. The positive end of the list is...

Media Invited to Renaming Ceremony for International Ocean Science Satellite

Portal origin URL: Media Invited to Renaming Ceremony for International Ocean Science SatellitePortal origin nid: 457574Published: Friday, January 24, 2020 - 10:32Featured (stick to top of list): noPortal text teaser: NASA and its partners on an upcoming mission to extend long-term observations of global sea level change will announce the renaming of the mission, currently...

Adding memory to pressure-sensitive phosphors

Mechanoluminescence (ML) is a type of luminescence induced by any mechanical action on a solid, leading to a range of applications in materials research, photonics and optics. For instance, the mechanical action can release energy previously stored in the crystal lattice of phosphor via trapped charge carriers. However, the method has limits when recording ML emissions during a pressure-induced...

UK coronavirus tests clear 14 people

Chief medical officer says more people being checked for virus which has broken out in ChinaFollow the latest coronavirus newsTests for coronavirus on 14 people in the UK have come back negative but checks are being carried out on other people, the chief medical officer has said.Prof Chris Whitty made the announcement on Friday after the Cobra emergency committee met to discuss the threat to the...

15,000-year-old viruses found in Tibetan glacier

A team of researchers from The Ohio State University and Lawrence Berkeley National Laboratory has found a host of ancient virus groups in ice cores taken from a Tibetan glacier. They have written a paper about their discovery and uploaded it to the bioRxiv preprint server.

Researchers find ways to improve on soap and water

Nanosafety researchers at the Harvard T.H. Chan School of Public Health have developed a new intervention to fight infectious disease by more effectively disinfecting the air around us, our food, our hands, and whatever else harbors the microbes that make us sick. The researchers, from the School's Center for Nanotechnology and Nanotoxicology, were led by Associate Professor of Aerosol Physics...

Growing global population: Research into food production lacks a holistic perspective

Meeting one of the great challenges of our time—providing a growing global population with food—requires research with a holistic perspective on food production, people's eating habits, and the population increase. However, during the last few decades, the world's researchers have primarily focused on the first of these factors, and more or less ignored the other two. This has recently been...