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How the immune system deals with the gut's plethora of microbes

New research suggests that our immune system may play an active role in shaping the digestive-tract flora, which is tightly linked to health and disease.

Buzz kill: Ogre-faced spiders 'hear' airborne prey with their legs

In the dark of night, ogre-faced spiders with dominating big eyes dangle from a silk frame to cast a web and capture their ground prey. But these spiders also can capture insects flying behind them with precision, and scientists have now confirmed how.

Secret surfing life of remoras hitchhiking on blue whales

A new study of blue whales off the coast of California has given researchers the first ocean recordings of their famous hitchhiking partner -- the remora -- revealing the suckerfish's secret whale-surfing skills as well as their knack for grabbing the most fl

Study helps explain why motivation to learn declines with age

Neuroscientists have identified a brain circuit critical for learning to make decisions that require evaluating the cost or reward of an action. They showed this circuit is negatively affected by aging and in Huntington's disease.

Multi-drone system autonomously surveys penguin colonies

A new multi-drone imaging system was put to the test in Antarctica. The task? Documenting a colony of roughly 1 million Adélie penguins.

Raptor-inspired drone with morphing wing and tail

Engineers have developed a drone with a feathered wing and tail that give it unprecedented flight agility.

Leaving more big fish in the sea reduces carbon dioxide emissions

Leaving more big fish -- like tuna, sharks, mackerel and swordfish -- in the sea reduces the amount of carbon dioxide released into the Earth's atmosphere. This is because when a fish dies in the ocean it sinks to the depths and sequestrates all the carbon i

Juno data indicates 'sprites' or 'elves' frolic in Jupiter's atmosphere

An instrument on NASA's Juno mission spacecraft may have detected transient luminous events -- bright flashes of light in the gas giant's upper atmosphere.

Weak equivalence principle violated in gravitational waves

New research proves theoretically that the Weak Equivalence Principle can be violated by quantum particles in gravitational waves - the ripples in spacetime caused by colossal events such as merging black holes.

Device takes us closer to high-performing wearable and eco-disposable AI electronics

Engineers have unveiled a device with unique functionality that could signal the dawn of a new design philosophy for electronics, including next-generation wearables and eco-disposable sensors.

Genetic analysis system yields new insights into bacterial pneumonia

A team of infectious disease researchers has developed a new method to identify virulence genes in Streptococcus pneumoniae, the leading cause of bacterial pneumonia. Using this technique in a mouse model of pneumonia, they were able to gain new insights int

Paracetamol poisonings up

In 2003, the painkiller paracetamol became available in Switzerland in tablets with a higher dose of the active ingredient. This correlates with an increase in cases of paracetamol poisoning in the country, as a data analysis shows.

Secrets of 'smasher shrimp' property ladder revealed

Mantis shrimps carefully survey burrows before trying to evict rivals, new research shows.

Renewable energy targets can undermine sustainable intentions

Renewable energy targets (RETs) may be too blunt a tool for ensuring a sustainable future, according to new research.

Climate change drives plants to extinction in the Black Forest in Germany

Climate change is leaving its mark on the bog complexes of the German Black Forest. Due to rising temperatures and longer dry periods, two plant species have gone extinct over the last 40 years. The populations of many others have decreased by one third. Acco

Judges' decisions in sport focus more on vigor than skill

Researchers analyzed almost 550 men's and women's mixed martial arts contests, using data collated for the Ultimate Fighting Championship, and found the rate at which competitors fight is more likely to result in judges awarding victory than the skill with wh

Specific and rapid expansion of blood vessels

Upon a heart infarct or stroke, rapid restoration of blood flow, and oxygen delivery to the hypo perfused regions is of eminent importance to prevent further damage to heart or brain. Arterial diameter is a critical determinant of blood flow conductance. Scie

An artificial cell on a chip

Researchers have developed a precisely controllable system for mimicking biochemical reaction cascades in cells. Using microfluidic technology, they produce miniature polymeric reaction containers equipped with the desired properties. This 'cell on a chip' i

Estrogenic and anti-estrogenic effects of PFASs could depend on the presence of estrogen

Perfluoroalkyl substances (PFASs) have received intense scrutiny in recent years because of their persistence in the environment and potential endocrine-disrupting effects. However, their estrogenic activities are controversial, with different studies showin

Astronomers are bulging with data

For the first time, over 250 million stars in our galaxy's bulge have been surveyed in near-ultraviolet, optical, and near-infrared light, opening the door for astronomers to reexamine key questions about the Milky Way's formation and history. Using ultraviol

Hurricanes pack a bigger punch for Florida's west coast

Hurricanes, the United States' deadliest and most destructive weather disasters, are notoriously difficult to predict. With the average storm intensity as well as the proportion of storms that reach category 4 or 5 likely to increase, more accurate prediction

New strategy for treating common retinal diseases shows promise

Scientists have uncovered a potential new strategy for treating eye diseases that affect millions of people around the world, often resulting in blindness.

Mountain gorillas are good neighbors - up to a point

Mountain gorilla groups are friendly to familiar neighbors - provided they stay out of 'core' parts of their territory - new research shows.

Australian scientists discover 500-meter-tall coral reef in the Great Barrier Reef

Scientists have discovered a massive detached coral reef in the Great Barrier Reef, measuring more than 500 meters high -- taller than the Empire State Building, the Sydney Tower and the Petronas Twin Towers.

Scientists map structure of potent antibody against coronavirus

Scientists have shown that a potent antibody from a COVID-19 survivor interferes with a key feature on the surface of the coronavirus's distinctive spikes and induces critical pieces of those spikes to break off in the process.

Empathy may be in the eye of the beholder

Do we always want people to show empathy? Not so, said researchers. A recently published article suggests that although empathy is often portrayed as a virtue, people who express empathy are not necessarily viewed favorably.

How to design organic solar cell materials

Scientists have recently scrutinized organic solar cells and derived design rules for light-absorbing dyes that can help to make these cells more efficient, while tailoring the absorption spectrum of the cells to the needs of the chosen application.

Beaches can survive sea-level rises as long as they have space to move

An international team of coastal scientists has dismissed suggestions that half the world's beaches could become extinct over the course of the 21st century.

Antarctica yields oldest fossils of giant birds with 21-foot wingspans

Some of the largest birds in history, called pelagornithids, arose a few million years after the mass extinction that killed off the dinosaurs and patrolled the oceans with giant wingspans for some 60 million years. A team of paleontologists has found two fos

For vampire bats, social distancing while sick comes naturally

New research shows that when vampire bats feel sick, they socially distance themselves from groupmates in their roost -- no public health guidance required.

Biomarkers could be used in a quick, inexpensive COVID-19 blood screening tool

A new study suggests that COVID-19 affects the human body's blood concentration levels of specific metabolites -- small molecules broken down in the human body through the process of metabolism. Three specific metabolites identified in this study could act a

Galaxies in the infant universe were surprisingly mature

ALMA telescope conducts largest survey yet of distant galaxies in the early universe.

Aerosol microdroplets inefficient carriers of COVID-19 virus

Aerosol microdroplets do not appear to be extremely efficient at spreading the virus that leads to COVID-19. While the lingering microdroplets are certainly not risk-free, due to their small size they contain less virus than the larger droplets that are produ

'White matter lesion' mapping tool identifies early signs of dementia

A new tool for analyzing tissue damage seen on MRI brain scans can detect with more than 70% accuracy early signs of cognitive decline, new research shows.

Over 80 percent of COVID-19 patients have vitamin D deficiency, study finds

Over 80 percent of 200 COVID-19 patients in a hospital in Spain have vitamin D deficiency, according to a new study.

Healthcare as a climate solution

Although the link may not be obvious, healthcare and climate change -- two issues that pose major challenges around the world -- are in fact more connected than society may realize. So say researchers, who are increasingly proving this to be true.

New map of the immune landscape in pancreatic cancer could guide immunotherapy

A new analysis highlights the diversity of immune response in pancreatic cancer, and points toward the need for treatments tailored to individual patients.

New insights into a potential target for autoimmune disease

With insights into a molecular pathway that regulates the activity of Tregs, a type of T cell involved in immunosuppression, new research opens up possibly new avenues for treating inflammatory and autoimmune diseases.

Sea-level rise global observing system proposed

A researcher proposes a new approach to monitoring global sea-level rise. Using the existing NOAA Global Drifter Program array of roughly 1,200 buoys that drift freely with ocean currents, he suggests adding additional instruments to record their height, or t
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