COVID-19 is associated with life-threatening blood clots in the arteries of the legs, according to a new study. Researchers said COVID-19 patients with symptoms of inadequate blood supply to the lower extremities tend to have larger clots and a significantly higher rate of amputation and death than uninfected people with the same condition.

A male fertility test could help predict which men might need treatment and which couples might have success with different forms of assisted reproduction.

Researchers systematically surveyed the entire protein landscape of normal and nutrient-deprived cells to identify which proteins and organelles are degraded by autophagy.

An emerging hydrogel material with the capacity to degrade and spontaneously reform in the gastrointestinal tract could help researchers develop more effective methods for oral drug delivery. In research published in Soft Matter, Lehigh University rheologists mimic pH environment of GI tract to shed light on pharmaceutical potential of covalent adaptable hydrogels (CAHs).

New research shows how proofreading proteins prevent DNA replication errors by creating an immobile structure that calls more proteins to the site to repair the error. This structure could also prevent the mismatched region from being ''packed'' back into the cell during division.

No year since weather records began was as hot and dry as 2018. A first comprehensive analysis of the consequences of this drought and heat event shows that central European forests sustained long-term damage. Even tree species considered drought-resistant, such as beech, pine and silver fir, suffered.

A genetic code-reading machine that is overactive in the pediatric cancer Ewing sarcoma causes cell structures called nucleoli to break up, researchers found. A team will study how to take advantage of this finding therapeutically.

A vaccine additive known as an adjuvant can enhance responses to a vaccine containing the exotic avian flu virus H5N1, so that both rookie and veteran elements of the immune response are strengthened, according to a new study.

Researchers have developed a strategy that more accurately predicts seasonal rainfall over the Asian monsoon region and could provide tangible improvements to water resource management on the Indian subcontinent, impacting more than one fifth of the world's population.

A pharmacology professor and her team have uncovered a mechanism driving a rare, lethal disease called Wolfram Syndrome and also a potential treatment.

Laboratory experiments showed that the plant compound works in combination with oxacillin to knock down the resistance to the drug of methicillin-resistant Staphylococcus aureus, or MRSA.

The first images from Solar Orbiter, a new Sun-observing mission by ESA and NASA, have revealed omnipresent miniature solar flares, dubbed 'campfires', near the surface of our closest star.

A new study by engineers and food scientists demonstrates that a durable coating, made from titanium dioxide, is capable of eliminating foodborne germs, such as salmonella and E. coli, and provides a preventative layer of protection against future cross-contamination on stainless steel food-contact surfaces.

Scientists investigated the performance and profitability of two future generations of cows born to mothers exposed to heat stress during pregnancy.

Researchers have developed a new use for a common blood test, which could provide a potentially life-saving treatment for heart failure.

Scientists report that at least 16 species of deep-sea fish have evolved ultra-black skin that absorbs more than 99.5% of the light that hits them, making them nearly impossible to pick out from the shadows. These fish owe their disappearing act to tiny packets of pigment within their skin cells called melanosomes. The melanosomes of ultra-black fish are differently shaped and arranged on a...

Researchers have made a key advance in understanding how timing impacts the way microorganisms colonize plants, a step that could provide farmers an important tool to boost agricultural production.

Since the time of Charles Darwin, scientists have marvelled at sea turtles' impressive ability to make their way -- often over thousands of kilometers -- through the open ocean and back to the very places where they themselves hatched years before. Now, researchers have evidence that the turtles pull off these impressive feats of navigation with only a crude map to guide them on their way.

A research team concludes that personal perception can be an important indicator for the early detection of Alzheimer's disease. Scientists report that individuals with subjectively felt memory problems also exhibited on average measurable cognitive deficits that were associated with abnormalities in the spinal fluid. Early diagnosis and therapy development could benefit from these findings.

Scientists have studied sedimentary ancient DNA (sedaDNA) from sediment deposits in the southern North Sea, an area which has not previously been linked to a tsunami that occurred 8150 years ago.

Young people need more support to navigate the growing number of digital technologies which track and manage their health, say researchers.

Researchers say they've cracked the code to a cobalt-free high-energy lithium-ion battery, eliminating the cobalt and opening the door to reducing the costs of producing batteries while boosting performance in some ways.

Amphibians have few options to avoid the underappreciated one-two punch of climate change, according to a new study. Rising summer temperatures are also resulting in higher rates of dehydration among wet-skinned amphibians as they attempt to keep themselves cool.

Astronomers studying galaxy evolution have long struggled to understand what causes star formation to shut down in massive galaxies. Although many theories have been proposed to explain this process, known as ''quenching,'' there is still no consensus on a satisfactory model. Now, an international team of scientists has proposed a new model that successfully explains a wide range of observations...