Patients with COVID-19 who have an acute ischemic stroke (AIS) experience more severe strokes, have worse functional outcomes and are more likely to die of stroke than AIS patients who do not have COVID-19. The wide range of complications associated with COVID-19 likely explain the worse outcomes.

A baby girl in Texas -- born prematurely to a mother with COVID-19 -- is the strongest evidence to date that intrauterine (in the womb) transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) can occur, according to a new report.

As we age, the immune system gradually becomes impaired. One aspect of this impairment is chronic inflammation in the elderly, which means that the immune system is constantly active and sends out inflammatory substances. Such chronic inflammation is associated with multiple age-related diseases including arthritis and Alzheimer's disease, and impaired immune responses to infection. One of the...

Lopinavir is a drug against HIV, hydroxychloroquine is used to treat malaria and rheumatism. Until recently, both drugs were regarded as potential agents in the fight against the coronavirus SARS-CoV-2. Researchers have now discovered that the concentration of the two drugs in the lungs of Covid-19 patients is not sufficient to fight the virus.

A commentary published in the journal Pediatrics concludes that children infrequently transmit COVID-19 to each other or to adults and that many schools, provided they follow appropriate social distancing guidelines and take into account rates of transmission in their community, can and should reopen in the fall.

A new study has shown that coral outplant survival is likely to drop below 50% if sea surface temperatures exceed 30.5 degrees Celsius and that survival rates can also be predicted by considering temperature conditions in the year prior to outplanting.

A gene has been discovered that can naturally suppress the signs of Alzheimer's Disease in human brain cells. The scientists have also developed a new rapid drug-screening system for treatments that could potentially delay or prevent the disease.

Researchers have added fresh evidence that early exposure to vaccine-, bacterial- or microbiota-derived antigens has a dramatic effect on the diversity of antibodies an adult mammal will have to fight future infections by pathogens. This antibody diversity is called the clonal repertoire -- basically different single cells with distinct antibody potential that can multiply into a large clone of...

Study finds that teenagers utilize Long-Acting Reversible Contraception (LARC) at a rate five times higher than the United States as a whole.

Researchers used single-nucleus RNA sequencing to compare transcriptional responses to acute cocaine in 16 unique cell populations from the brain nucleus accumbens. The atlas is part of a major study that used multiple cutting-edge technologies to describe a dopamine-induced gene expression signature that regulates the brain's response to cocaine. The study shows neurobiological processes that...

A new study found that remdesivir potently inhibited SARS-CoV-2, the virus which causes COVID-19, in human lung cell cultures and that it improved lung function in mice infected with the virus.

Scientists have demonstrated that a Salmonella biofilm protein can cause autoimmune responses and arthritis in animals.

An ancient European volcanic region may pose both a greater long-term volcanic risk and seismic risk to northwestern Europe than scientists had realized, geophysicists report. The densely populated area is centered in the Eifel region of Germany, and covers parts of Belgium, the Netherlands, France and Luxembourg.

A new article investigating the differences in CT findings between coronavirus disease (COVID-19) pneumonia and influenza virus pneumonia found that most lesions from COVID-19 were located in the peripheral zone and close to the pleura, whereas influenza virus was more prone to show mucoid impaction and pleural effusion. The more important role of CT during the present pandemic is in finding...

The science community should withdraw from involvement in international tests such as PISA because they have forced schools to adopt 'narrow' curricula and pedagogies, a study says.

Biologists have traced the stability of plant mitochondrial genomes to a particular gene - MSH1 - that plants have but animals don't. Their experiments could lend insight into why animal mitochondrial genomes tend to mutate.

The discovery unveils the molecular machinery that plants use to weave cellulose chains into cable-like structures called 'microfibrils.'

This is one of the first comprehensive looks at lung cells using a technology called single-cell RNA sequencing. Instead of examining a mash-up of many cells from a tissue sample, single-cell sequencing allowed researchers in this study to closely examine the individual cells that make up the lungs; to identify their function, and ultimately understand the molecular changes that may be driving the...

Materials scientists have demonstrated ways to make super white paint that reflects as much as 98% of incoming heat from the sun. The advance shows practical pathways for designing paints that, if used on rooftops and other parts of a building, could significantly reduce cooling costs, beyond what standard white 'cool-roof' paints can achieve.

The CRISPR system is a powerful tool for the targeted editing of genomes, with significant therapeutic potential, but runs the risk of inappropriately editing ''off-target'' sites. However, a new study shows that mutating the enzyme at the heart of the CRISPR gene editing system can improve its fidelity.

A new study argues that deep-sea mining poses significant risks, not only to the area immediately surrounding mining operations but also to the water hundreds to thousands of feet above the seafloor, threatening vast midwater ecosystems. Further, the scientists suggest how these risks could be evaluated more comprehensively to enable society and managers to decide if and how deep-sea mining should...

Researchers are developing an A.I. platform that provides users with access to the information and insights hidden inside federal court records, regardless of their data and analytic skills.

Scientists have digitally 'dissected', for the first time, the most primitive jawed fish fossils with teeth found near Prague more than 100 years ago. The results show that their teeth have surprisingly modern features.

Researchers have found a significant increase in patients experiencing stress cardiomyopathy, also known as broken heart syndrome, during the COVID-19 pandemic.

Researchers propose a decentralized, global wildlife biosurveillance system to identify -- before the next pandemic emerges -- animal viruses that have the potential to cause human disease.

Scientists find the growth of phytoplankton in the Arctic Ocean has increased 57 percent over just two decades, enhancing its ability to soak up carbon dioxide. While once linked to melting sea ice, the increase is now propelled by rising concentrations of tiny algae.

A new study of 2,500 Dutch children is the first to explore the relationship between brain volume and different doses of radiofrequency electromagnetic fields.

Women who deliver their first child by cesarean section (C-section) are less likely to conceive a second child than those who deliver vaginally, despite being just as likely to plan a subsequent pregnancy, according to researchers. The team followed more than 2,000 women for three years after they delivered their first child.

Researchers find that the benefits of inhalers for asthma sufferers outweigh the risks of contracting coronavirus, following concerns raised after WHO warned that steroids could reduce immunity.

How is COVID-19 impacting people and the planet and what are the implications for a post-pandemic world? A new study quantifies the socio-economic losses and environmental gains.

A little-studied liver protein may be responsible for the well-known benefits of exercise on the aging brain, according to a new study in mice. The findings could lead to new therapies to confer the neuroprotective effects of physical activity on people who are unable to exercise due to physical limitations.

Findings from a new study into the effects of radiofrequency radiation generated by the wireless technology that will soon be the standard for cell phones suggest few health impacts.

A new study might explain why humans register some tastes more quickly than others, potentially due to each flavor's molecular size. The research also provided explanation as to why humans register taste more quickly when food or drink moves over their tongues quickly, as compared to when they are held in their mouth steadily.

Bats carry many viruses, including COVID-19, without becoming ill. Biologists are studying the immune system of bats to find potential ways to 'mimic' that system in humans.

An international team of researchers has identified a chain of events that matures the sperm and triggers their motility. The findings have implications for diagnostic and therapeutic research in male infertility and male contraceptive development.

A new paper examines the economics of an aquaculture industry of the future that is simultaneously environmentally sustainable and nutritious for the nearly 1 billion people worldwide who depend on it.

There is growing evidence that another 'pandemic' has been infecting bees around the world for the past two decades, and is spreading: a fungal pathogen known as Nosema.

Microbes found deeper in the ocean are believed to have slow population turnover rates and low amounts of available energy. But a new examination of microbial communities found deeper in seafloor sediments and around hydrocarbon seepage sites has found they have more energy available and a higher population turnover. The deeper sediments in the seepages are most likely heavily impacted by the...

Following U.S. students across five summers between grades 1 and 6, a little more than half (52 percent) experienced learning losses in all five summers, according to a large national study. Students in this group lost an average of 39 percent of their total school year gains during each summer.

The combined use of antiretroviral medications lopinavir and ritonavir, previously used to treat SARS-Cov-1 and MERS-Cov patients, appeared to cause bradycardia in 22% of elderly, critically ill COVID-19 patients, in a small study in France. Bradycardia was resolved in all patients after discontinuation or dose reduction of both medications.

A study contains bad news and good news about Covid-19 misinformation -- and a new insight that may help reduce the problem.

A new study shows that increases in the concentrations of blood sodium can have an influence on the biological clock of mice, opening new research avenues for potentially treating the negative effects associated with long distance travel or shift work.

A new study used soil samples collected from neighborhoods around the cathedral to estimate local amounts of lead fallout from the fire.

Astronomers succeeded in detecting 12 stellar flare phenomena on AD Leonis. One of these flares was 20 times larger than those emitted by our own sun, categorizing it a 'superflare'. Subsequent data analysis presents new insight into these explosive phenomena.