6,685 articles mezi dny 1.10.2020 a 31.10.2020

Criss-crossing viruses give rise to peculiar hybrid variants

In new research appearing in the journal mBio, Arvind Varsani and his colleagues investigate a recently discovered class of viruses that have taken the characteristic versatility of the viral world to new heights.Referred to as cruciviruses, these minute forms reveal a fusion of components from both RNA and DNA viruses, proving that these previously distinct genomic domains can, under proper...


Five Supreme Court rulings that signal what to expect next

Things usually move pretty slowly for the US Supreme Court, with cases sometimes taking years to make their way through to a ruling. But these days it’s moving so quickly that the newest justice didn’t even have time to participate in the first two crucial voting-related rulings after her confirmation. The breakneck pace reveals that the nation’s highest court is already shaping the 2020...

U.S. nursing homes still face COVID-19 test delays; you can wash Halloween candy

Most U.S. nursing homes still cannot get prompt results of COVID-19 tests of staff and residents, researchers reported on Friday in JAMA Internal Medicine. This was true "even among homes in hotspot counties supplied with rapid testing machines from the federal government, which implies that these machines are not helping nursing homes with the rapid turnaround they need," he...

Asteroid's scars tell stories of its past

By studying impact marks on the surface of asteroid Bennu—the target of NASA's OSIRIS-REx mission—a team of researchers led by the University of Arizona has uncovered the asteroid's past and revealed that despite forming hundreds of millions of years ago, Bennu wandered into Earth's neighborhood only very recently.

New drone technology improves ability to forecast volcanic eruptions

Specially-adapted drones have been gathering data from never-before-explored volcanoes that will enable local communities to better forecast future eruptions. The cutting-edge research at Manam volcano in Papua New Guinea is improving scientists' understanding of how volcanoes contribute to the global carbon cycle, key to sustaining life on Earth.

Water on ancient Mars

A meteorite that originated on Mars billions of years ago reveals details of ancient impact events on the red planet. Certain minerals from the Martian crust in the meteorite are oxidized, suggesting the presence of water during the impact that created the meteorite. The finding helps to fill some gaps in knowledge about the role of water in planet formation.