Новости за 22.02.2021

Biological clocks don't just tick for humans, they're needed by most animals. Researchers from Japan have discovered that insect neurons that promote egg-laying need a biological clock gene for a day length-dependent adaptive cellular response.

Imagine abrupt shifts of the tropical monsoons, reductions in Northern Hemisphere rainfall, and strengthening of North Atlantic storm tracks within decades. These are some of the impacts that climate scientists expect if the Atlantic Meridional Overturning Circulation (AMOC), which redistributes heat from equatorial regions to the Northern Hemisphere, suddenly tips into a dormant state as a result of global warming. The consequences would drastically alter conditions for agriculture, biodiversity, and the economy in large parts of the World.

You might not like mosquitoes, but they like you, says Utah State University biologist Norah Saarman. And where you lead, they will follow.

Things just got hairy at Princeton.

Normally, we think of the freezing point of water as 32°F—but in the world of weather forecasting and hydrologic prediction, that isn't always the case. In the Lake Tahoe region of the Sierra Nevada, the shift from snow to rain during winter storms may actually occur at temperatures closer to 39.5°F, according to new research from the Desert Research Institute (DRI), Lynker Technologies, and citizen scientists from the Tahoe Rain or Snow project

The US space agency NASA on Monday released the first video of the landing of the Perseverance rover on Mars.

Americans who rely on social media as their main source of news are more likely believe false or unproven stories about important topics such as politics and COVID-19, a survey showed Monday.

In organic chemistry, the conversion of inactivated carbon-hydrogen (C-H) bonds to carbon-nitrogen (C-N) bonds is a highly valued transformation. Scientists can accomplish such reactions at only a single C-H site since the first derivatization can diminish the reactivity of the surrounding C-H bonds. In a new report now published in Science, Tao Shen and Tristan H. Lambert at the department of chemistry and chemical biology, Cornell University, New York, showed that alkylated arenes could undergo... Читать дальше...

From aboard the Juno spacecraft, a Southwest Research Institute-led instrument observing auroras serendipitously spotted a bright flash above Jupiter's clouds last spring. The Ultraviolet Spectrograph (UVS) team studied the data and determined that they had captured a bolide, an extremely bright meteoroid explosion in the gas giant's upper atmosphere.

Walk along the beach after a winter storm and you'll see a shore littered with wracks of giant kelp, some 30 to 40 feet long—evidence of the storm's impact on coastal kelp forests.

Learning more about what motivates people to join violent ideological groups and engage in acts of cruelty against others is of great social and societal importance. New research from Assistant Professor of Psychology at NYUAD Jocelyn Bélanger explores the idea of ideological obsession as a form of addictive behavior that is central to understanding why people ultimately engage in ideological violence, and how best to help them break this addiction.

For only the second time, astronomers have linked an elusive particle called a high-energy neutrino to an object outside our galaxy. Using ground- and space-based facilities, including NASA's Neil Gehrels Swift Observatory, they traced the neutrino to a black hole tearing apart a star, a rare cataclysmic occurrence called a tidal disruption event.

Desert bighorn sheep in the Mojave National Preserve in California and surrounding areas appear to be more resilient than previously thought to a respiratory disease that killed dozens of them and sickened many more in 2013, a new study has found.

Fool the novel coronavirus once and it can't cause infection of cells, new research suggests.

By engineering common filter papers, similar to coffee filters, a team of NYU Abu Dhabi researchers have created high throughput arrays of miniaturized 3-D tumor models to replicate key aspects of tumor physiology, which are absent in traditional drug testing platforms. With the new paper-based technology, the formed tumor models can be safely cryopreserved and stored for prolonged periods for on-demand drug testing use. These cryopreservable tumor models could provide the pharmaceutical industry... Читать дальше...

New research unveiled the earliest evidence of octopus predation in the fossil record. The evidence consists of tiny holes drilled in the clams they preyed upon during the Cretaceous period about 75 million years ago.

A recent discovery that, in real-world conditions bacteria, similar to animals, cooperate and selflessly act for the greater good of the group, could help scientists to predict how helpful and harmful strains behave. The study is the first to reveal that in the human gut, complex bacterial communities, made up of hundreds of species, contain 'helpers' whose behaviors benefit their closest relatives.

A combined team of researchers from the Royal Horticultural Society and the University of Reading has found that the Cotoneaster franchetii (also known as Franchet's cotoneaster) hedge plant is effective at filtering automobile air pollutants. In their paper published in the journal Environments, the group describes experiments that involved testing different types of plants to find out which were best at filtering air pollution next to roadways.

Using NASA's Chandra X-ray observatory, astronomers from the University of Alabama in Huntsville have investigated the central region of the galaxy NGC 1600, focusing on its ultramassive black hole (UMBH). Results of the study, presented in a paper published February 11 on the arXiv pre-print server, shed more light on the properties of this UMBH.

Home gardens are by far the biggest source of food for pollinating insects, including bees and wasps, in cities and towns, according to new research.