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Astrophysicists from the University of Bath in the UK have developed a new method for pinpointing the whereabouts of extremely rare extragalactic objects. They hope their technique for finding 'changing-look quasars' will take scientists one step closer to unravelling one of greatest mysteries of the universe - how supermassive black holes grow. Quasars are believed to be responsible for regulating the growth of supermassive black holes and their host galaxies.

Researchers have reviewed all clinical trials of targeted drugs used in the treatment of vasculitis. With this, they propose a completely mechanistic categorisation of these diseases, which may in time provide better treatment.

Men who suffer sensory loss, particularly hearing loss, are more likely to be physically inactive and obese than women, according to a new study published in the European Journal of Public Health.

Drone footage shows that porpoises may be more social and cooperative than previously thought.

An algorithm based on 20,000 nights of sleep that can improve the diagnosis, treatment and our overall understanding of sleep disorders has been developed at the University of Copenhagen.

The Late Triassic Tianqiaoling flora is well-known in China, and its discovery has changed our understanding of Chinese Late Triassic phytogeographical divisions. However, the accurate dating has still not been achieved. In this study, rhyolite samples were collected from the bottom of the Tianqiaoling Formation, which is conformally contacted the Tianqiaoling flora-bearing beds. The results of new dating were 212.8±2.5 Ma, indicating the Tianqiaoling flora in development occurred in the late Norian (~227-208.5 Ma).

Weakened electrical signals in the brain may be an early warning sign of age-related neurodegenerative diseases such as Alzheimer's disease.

Unmanned aerial vehicles may help emergency crews find those in need and provide situational awareness over a large area. During the 180th ASA Meeting, Macarena Varela from Fraunhofer FKIE will describe how a system using an array of microphones and advanced processing techniques could be a lifesaver for disaster victims. The session, "Bearing Estimation of Screams Using a Volumetric Microphone Array Mounted on a UAV," will take place Tuesday, June 8.

In cases of severe varicose vein disease, dilated veins are usually removed or destroyed. However, when patients later need a bypass due to circulatory problems, the large blood vessels are then not available as a substitute. In a multicenter study led by Dr. Dominic Mühlberger from the Vascular Surgery Department at Ruhr-Universität Bochum's St. Josef Hospital, researchers tested a vascular preservation therapy developed in-house.

Converting Central American tropical forests into agricultural land is changing the color and composition of natural material washing into nearby rivers, making it less likely to decompose before it reaches the ocean, a new Southampton-led study has shown.

New insight on the link between a gene called SORBS2 and congenital heart disease has been published in eLife, with findings that may help explain the cause of the disease in some patients.

For the first time, a unique study conducted at Lund University in Sweden has tracked the meteorite flux to Earth over the past 500 million years. Contrary to current theories, researchers have determined that major collisions in the asteroid belt have not generally affected the number of impacts with Earth to any great extent.

A new robot -- named WomBot -- that can be used to explore and study wombat burrows is presented in a study published in the journal SN Applied Sciences.

New molecules, developed by researchers at Linköping University, Sweden, have promising properties as possible drugs against epilepsy. A study published in the journal Epilepsia shows that several of the molecules have antiseizure effects.

A research group at the University of Cordoba is developing a mathematical algorithm for the diagnosis of different stages of Parkinson's, a tool to support medical decisions that could help improve treatments against this disease.

New research from the University of Minnesota Medical School and colleagues at the Mayo Clinic reveals a possible new approach to preventing death and severe disease in elderly people infected with SARS-CoV-2.

Blue whales may be the biggest animals in the world, but they're also some of the hardest to find. A team of scientists led by UNSW Sydney are confident they've discovered a new population of pygmy blue whales, the smallest subspecies of blue whales, in the Indian Ocean. And it was the whales' powerful singing -- recorded by underwater bomb detectors -- that gave them away.

Variants of viruses, such as that causing COVID-19, can now be quickly studied in the laboratory, even before they emerge in nature and become a major public health challenge.

Accelerated cognitive decline in patients with and without existing dementia is one of the most disturbing outcomes of hospitalizations for older adults, affecting at least 2.6 million Americans every year. But the condition, known as delirium, is believed to be preventable in up to 40% of hospital-acquired cases, and researchers at UC San Franciso wanted to see if simple tweaks, like avoiding nighttime interruptions to promote sleep, nixing certain prescription drugs, and promoting exercise and social engagement, could decrease its incidence.

The study which targeted postmenopausal women who are at high risk for primary osteoporosis found that if any of the following is true, TST <= 1.30 and BMI <= 23.4, TST <= 1.32 and BMI <= 22.4, TST <= 1.34 and BMI <= 21.6, or TST < 1.24 and any BMI, you are more than five times more likely to have osteoporosis than someone who is not.