A new study suggests a slowdown in the use of convalescent plasma to treat hospitalized COVID-19 patients led to a higher COVID-19 mortality during a critical period during this past winter's surge.

Parts of the Amazon have been cultivated by Indigenous peoples for thousands of years, and mere centuries ago were the sites of cities and farmland, but other parts are 'untouched.' By examining microscopic bits of plant remains and charcoal in the soil, scientists learned that the Putumayo region of Peru's plant life hasn't changed much in 5,000 years, meaning that the people who have lived there...

A team of researchers found that within the same genus of marine snapping shrimp, Synalpheus, genome size and social behavior not only vary widely, but they are also co-evolving over time.

Jet packs, robot maids and flying cars were all promises for the 21st century. We got mechanized, autonomous vacuum cleaners instead. Now a team of Penn State researchers are exploring the requirements for electric vertical takeoff and landing (eVTOL) vehicles and designing and testing potential battery power sources.

Bdelloid rotifers are multicellular animals so small you need a microscope to see them. Despite their size, they're known for being tough, capable of surviving through drying, freezing, starvation, and low oxygen. Now, researchers have found that not only can they withstand being frozen, but they can also persist for at least 24,000 years in the Siberian permafrost and survive.

Physicistsreport definitive evidence of how auroras are created. In experiments, the physicists demonstrated the physical mechanisms for the acceleration of electrons by Alfven waves under conditions corresponding to Earth's auroral magnetosphere.

A new study shows that pre-Columbian people of a culturally diverse but not well-documented area of the Amazon in South America significantly altered their landscape thousands of years earlier than previously thought. The findings counter the notion of a pristine Amazon during pre-Columbian times.

Ecologists are urging coastal communities to embrace all that the season brings, including the sometimes-unwelcome deposits of brown seaweed that can accumulate on the southern shores.

Antarctica has experienced significant temperature changes, especially since the last glacial period. An international collaboration has now challenged previously accepted estimates of these variations, using new measurements. Their study highlights differences in behavior between East and West Antarctica, connected in particular to differing variations in their altitude.

New research identified a novel interaction between the SARS-CoV-2 spike protein and the galectin-3-binding protein (LGALS3BP) which could be a new therapeutic anti-viral target.

Cows can pass on the hypoglycin A toxin through their milk, a study shows. The substance can cause severe symptoms in humans and animals. Small amounts of the toxin were detected in the raw milk of cows that grazed in a pasture exposed to sycamore maple. The team calls for further investigations to realistically assess the potential dangers.

An international team of scientists has used the Gran Telescopio Canarias (GTC) to study a representative sample of galaxies, both disc and spheroidal, in a deep sky zone in the constellation of the Great Bear to characterize the properties of the stellar populations of galactic bulges.

Ancient chickens lived significantly longer than their modern equivalents because they were seen as sacred -- not food -- archaeologists have found.

Carbon loss in Canadian peatland is projected to increase by 103 per cent under a high emission scenario, according to new research.

The chances of restoring fertility through sperm stem cell transplant are as random as a coin toss. But a team of scientists developed a new strategy that serves as a 'weighted coin' that can favorably rig the odds to achieve outcomes where fertility is successfully restored.

Understanding how magnetic correlations change over short timescales is the first step in being able to control magnetism for applications.

Carbon dioxide emissions in Los Angeles and the Washington DC/Baltimore regions fell roughly 33 percent in April of 2020 compared with previous years, as roads emptied and economic activity slowed due to the COVID-19 pandemic, according to a new study. But while the emissions reductions are significant, the method that scientists used to measure them may have the greater long-term impact.

Researchers have discovered a new electronic property at the frontier between the thermal and quantum sciences in a specially engineered metal alloy -- and in the process identified a promising material for future devices that could turn heat on and off with the application of a magnetic 'switch.'

A more reliable way of estimating the size of megalodon shows the extinct shark may have been bigger than previously thought, measuring up to 65 feet, nearly the length of two school buses.

Researchers have developed a novel spectroscopic technique for the study of charge carrier dynamics in lead halide perovskites.

Researchers report that a near infrared camera helped people detect Burmese pythons at distances up to 1.3 times farther away than was possible using a traditional visible-wavelength camera.

Puerto Rico is not ready for another hurricane season, let alone the effects of climate change, according to a new study that shows the island's outstanding capacity to produce record-breaking floods and trigger a large number of landslides.

A new study predicts massive range declines of Africa's great apes -- gorillas, chimpanzees and bonobos -- due to the impacts of climate change, land-use changes and human population growth.

Scientists are developing a promising approach for treating type 1 diabetes by using stem cells to create insulin-producing cells (called beta cells) that could replace nonfunctional pancreatic cells.