Новости за 22.02.2024

Forests in the coolest, wettest parts of the western Pacific Northwest are likely to see the biggest increases in burn probability, fire size and number of blazes as the climate continues to get warmer and drier, according to new modeling led by an Oregon State University scientist.

When a recession takes a bite out of an entrepreneur's personal stock portfolio, does that person's business suffer more than those of older and larger competitors?

In the three years since NASA's Perseverance rover touched down on Mars, the NASA science team has made the daily task of investigating the red planet seem almost mundane.

Joe Gaydos remembers the beautiful minke whale that washed up on the shore of a San Juan Island in 2022. Illuminated by a pink and orange sunrise, its injuries were consistent with a fatal strike.

Access to reproductive health care—and abortion in particular—is an issue that resonates with voters' deeply held personal beliefs and reflects their underlying moral, philosophical, and religious views. But is it also an economic issue?

If storms become stronger in the future due to climate change, more nitrogen may be released from the bottom of coastal seas. This is shown by the research of marine biogeochemist Dunia Rios-Yunes at NIOZ in Yerseke. Rios-Yunes will defend her Ph.D. thesis today at the University of Utrecht. "The dynamics of nutrients in deltas and estuaries have been a bit of a blind spot for marine science so far," she says.

Biomedical engineers at Duke University have uncovered a key link between the spread of antibiotic resistance genes and the evolution of resistance to new drugs in certain pathogens.

Animal development requires successive changes in cell and tissue structures. To form complex 3D organs, cell shapes must adapt to support tissue morphogenesis. However, our understanding of how cellular structure changes are coupled with dynamic tissue morphogenesis is limited, largely due to reliance on studies of fixed tissues and cultured cells. Real-time observation of cell shape changes during morphogenesis is therefore crucial.

Congressional gridlock over border security talks, controversial proposals to restrict asylum and a looming impeachment trial for the U.S. Homeland Security Secretary Alejandro Mayorkas paint a stark picture of a nation deeply divided on immigration.

Ice loss from Antarctica has increased over the recent decades. The ice sheet in this remote continent covers about 98% of the Antarctic continent and is the largest single mass of ice on Earth. Even small changes in ocean conditions in the future could lead to long-lasting or even irreversible changes—with important implications for global sea-level rise.

New research from Teagasc on the Tirlán grain pool shows that Irish grain has one of the lowest carbon footprints in the world. The research, unveiled at the Tirlán Quality Grain Awards this week, is the first of its kind using a Life Cycle Assessment (LCA) methodology specifically developed for Irish grain on a wide range of commercially grown Irish cereals. Accounting for straw incorporation, the study showed the net carbon footprint could be close to net zero.

Over centuries, wetlands all over the world have had to give way to "more useful" types of land—seen from man's perspective.

Playing a huge role in moderating the climate, oceans are fundamental to the functioning of our planet. Understanding more about how seawater temperatures are rising and how oceans are absorbing excess atmospheric carbon dioxide, as well as knock-on issues such as ocean acidification, is key for understanding climate change and for taking effective action.

Researcher Jiayue (Gabriel) Yan is part of the Medical Entomology Program at the University of Illinois at Urbana-Champaign. His recent study appears in Communications Biology. In this article, he describes his work.

Nearly 30 years ago, scientists discovered a unique class of anticancer molecules in a family of bryozoans, a phylum of marine invertebrates found in tropical waters.

Researchers at the University of California, Irvine have discovered profound similarities and surprising differences between humans and insects in the production of the critical light-absorbing molecule of the retina, 11-cis-retinal, also known as the "visual chromophore." The findings deepen understanding of how mutations in the RPE65 enzyme cause retinal diseases, especially Leber congenital amaurosis, a devastating childhood blinding disease.

In a new report, researchers at Ivey Business School offer evidence-based research, best practices, and critical recommendations for farming that supports ecosystems through natural agricultural principles, a method known as regenerative agriculture.

Scientists at the UK Centre for Ecology & Hydrology (UKCEH) have developed a robust method for detecting whether a toxic chemical used in car tires is present in rivers, streams, and lakes and measuring its concentrations.

UAB researchers have produced the most complete map of the bacterial essential interactome, that is, how proteins combine and interact to perform functions essential for their survival. The research, published in the journal eLife, used the artificial intelligence tool AlphaFold to predict and model more than 1,400 interactions. The results have revealed previously unknown details of these mechanisms and offer potential targets for the development of new antibiotics.

Launched in 1995, ERS-2 was a pioneering Earth observation satellite that greatly influenced our understanding of our planet and climate change. Despite an intended operational life of only three years, the satellite had a 16-year operational lifetime, and together with the almost identical ERS-1 satellite left an important legacy for the future of Earth observation.

An international team of astronomers including UCL's (University College London's) Professor Mike Barlow has discovered the first conclusive evidence that a neutron star exists at the center of Supernova 1987A, a star explosion observed 37 years ago.

Research, led by scientists at the University of Sheffield and published in the journal Science, provides a new insight into the broader impacts of forestation on the Earth's climate, indicating that its positive impact is potentially smaller than previously thought.

More than 100 million years ago, the ancestors of the first snakes were small lizards that lived alongside other small, nondescript lizards in the shadow of the dinosaurs.

A chemical compound essential to all living things has been synthesized in a lab in conditions that could have occurred on early Earth, suggesting it played a role at the outset of life, finds a new study led by University College London researchers.

The teaching of science has long generated controversy in the United States—from evolution in the early 20th century to climate change today. Debates have also often emerged around how textbooks teach concepts related to social groups, and in particular whether they gloss over complex realities in ways that may mislead students in providing scientific instruction.