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58 articles from ScienceDaily

Money can't buy love -- or friendship

While researchers have suggested that individuals who base their self-worth on their financial success often feel lonely in everyday life, a new study has taken initial steps to better understand why this link exists.

Canada lynx disappearing from Washington state

Canada lynx are losing ground in Washington state, even as federal officials are taking steps to remove the species' threatened status under the Endangered Species Act. A massive monitoring study has found the big cat on only about 20% of its potential habitat in the state.

False-negative COVID-19 test results may lead to false sense of security

A new article calls attention to the risk posed by overreliance on COVID-19 testing to make clinical and public health decisions. The sensitivity of reverse transcriptase-polymerase chain reaction (RT-PCR) testing and overall test performance characteristics have not been reported clearly or consistently in medical literature, the article says.

Guidance on treating COVID-19 patients with signs of acute heart attack

Much remains unknown about COVID-19, but many studies already have indicated that people with cardiovascular disease are at greater risk of COVID-19. There also have been reports of ST-segment elevation (STE), a signal of obstructive coronary artery disease, in patients with COVID-19 who after invasive coronary angiography show no sign of the disease.

Genetic mechanism behind inflammatory bowel disease

Researchers have pinpointed a genetic variation responsible for driving the development of inflammatory bowel disease (IBD). The genetic pathway associated with this variation is involved in other immune disorders, suggesting the mechanism they identified could serve as an important therapeutic target.

New study shows how oxygen transfer is altered in diseased lung tissue

A multidisciplinary team of researchers at the University of Illinois at Urbana-Champaign has developed tiny sensors that measure oxygen transport in bovine lung tissue. The study -- which establishes a new framework for observing the elusive connection between lung membranes, oxygen flow and related disease -- is published in the journal Nature Communications.

Transmission of the amphibian pathogen, Bsal

Using existing data from controlled experiments and computer simulations, researchers have found that host contact rates and habitat structure affect transmission rates of Bsal among eastern newts, a common salamander species found throughout eastern North America.

A damaged fertilized egg sends signal that helps mother live a longer healthy life

There is plenty of scientific evidence that the health of a mother can impact the health of her child. Now a new study flips that relationship around: Researchers have discovered the health of the fertilized embryo determines the functional health of the mother, which has implications for healthy aging, stress resilience and suppression of protein damage. Essentially, a bad egg does good by...

Long-living tropical trees play outsized role in carbon storage

A group of trees that grow fast, live long lives and reproduce slowly account for the bulk of the biomass -- and carbon storage -- in some tropical rainforests, a team of scientists says. The finding that these trees, called long-lived pioneers, play a much larger role in carbon storage than previously thought may have implications in efforts to preserve forests as a strategy to fight climate...

Making sense of scents: 3D videos reveal how the nose detects odor combinations

Every moment of the day we are surrounded by smells. Odors can bring back memories, or quickly warn us that food has gone bad. But how does our brain identify so many different odors? And how easily can we untangle the ingredients of a mixture of odors? Scientists have taken an important step toward answering these questions, and the secret lies inside the nose.

Ancient teeth from Peru hint now-extinct monkeys crossed Atlantic from Africa

Four fossilized monkey teeth discovered deep in the Peruvian Amazon provide new evidence that more than one group of ancient primates journeyed across the Atlantic Ocean from Africa. The teeth are from a newly discovered species belonging to an extinct family of African primates known as parapithecids. Fossils discovered at the same site in Peru had earlier offered the first proof that South...

Scientists discover six new coronaviruses in bats

Researchers have discovered six new coronaviruses in bats in Myanmar -- the first time these viruses have been detected anywhere in the world. Future studies will evaluate the potential for transmission across species to better understand the risks to human health.

Ear's inner secrets revealed with new technology

What does it actually look like deep inside our ears? This has been very difficult to study as the inner ear is protected by the hardest bone in the body. But with the help of synchrotron X-rays, it is now possible to depict details inside the ear three-dimensionally. Researchers have now used the method to map the blood vessels of the inner ear.

How silver ions kill bacteria

The antimicrobial properties of silver have been known for centuries. Now scientists are seeking to better understand how the noble metal kills bacteria to help combat antiobiotic-resistant 'superbugs.'

Identical mice, different gut bacteria, different levels of cancer

Some types of gut bacteria are better than others at stimulating certain immune cells, specifically CD8+ T cells. And while these CD8+ T cells normally help protect the body against cancer, overstimulating them may promote inflammation and exhaust the T cells -- which can actually increase susceptibility to cancer, according to new mouse model.

Global trial fast tracks testing of hydroxychloroquine, other COVID-19 therapies

A novel 'learning while doing' clinical trial approach called REMAP helps doctors find the optimal trade-off between quickly adopting new therapies during a pandemic, such as the anti-malarial drug hydroxychloroquine, and waiting until they are tested in longer clinical trials. The trial learns from similar trials enrolling around the world and uses artificial intelligence to quickly arrive at...

How do mantis shrimp find their way home?

New research indicates mantis shrimp use path integration to find their way back to their burrows after leaving to seek food or mates. That means they can track their distance and direction from their starting point. A series of creative experiments revealed that to do that, they rely on a hierarchy of cues from the sun, polarized light patterns, and their internal senses.

New isomer separation method a boon for research on protein oxidation

Oxidation of the sulfur atom in methionine is an important biomolecular reaction that can have a wide range of biological consequences depending on the context and the protein involved. Chemists have reported a new method for separation of methionine sulfoxide diastereomers that opens up new opportunities for studying their roles in biological processes.