Рубрика: TopEnviro

  • Zika virus RNA found in free-ranging African bats

    Scientists have detected Zika virus RNA in free-ranging African bats. RNA, or ribonucleic acid, is a molecule that plays a central role in the function of genes. According to Fagre, the new research is a first-ever in science. It also marks the first time scientists have published a study on the detection of Zika virus…

  • Host genetic factors shape composition of virus communities

    Plants can be infected by multiple viruses at once. However, the composition of the pathogen community varies, even if individuals belong to the same species and the same population. Ecologists have now shown that these differences are primarily due to genetic variation among the hosts. The loss of genetic diversity could thus render species more…

  • Hidden weaknesses within volcanoes may cause volcano collapse

    Lava domes form at the top of many volcanoes when viscous lava erupts. When they become unstable, they can collapse and cause a hazard. An international team of researchers has analyzed summit dome instabilities at Merapi Volcano, Indonesia. The researchers hope that by understanding the inner processes, volcano collapses can be better forecasted. Catastrophic volcano…

  • Three critical factors in the end-Permian mass extinction

    252 million years ago, volcanic eruptions led to massive climate changes. Around the globe, roughly 75 percent of all land-based organisms and roughly 90 percent of all marine organisms died out as a result. Researchers have now used a new form of machine learning to unravel the causes of the mass extinction in the oceans.…

  • Protein uses two antiviral strategies to ward off infections

    To protect humans against infection, a protein called MARCH8 tags the vesicular stomatitis virus (VSV) for destruction while it merely holds HIV hostage, a new study shows. The findings reveal how a single protein can use multiple strategies to defend cells against viral infection. They could also improve our understanding of how HIV overcomes the…

  • Sediment loading key to predicting post-wildfire debris flows

    The mudslides that follow wildfires in Southern California can be deadly and difficult to predict. New research can help officials identify areas prone to these mudslides and respond before disaster occurs, according to scientists. Mudslides, or debris flows, can occur when rainfall washes away the buildup of sediment in mountain channels. Roughly equal parts water…

  • Concentration of microparticles in lakes reflect nearby human activity and land use

    A new study suggests that microparticle concentrations in lakes are higher than previously reported, and that human activity and surrounding land use may be a strong predictor of microplastics and anthropogenic fiber pollution. Plastic microparticles are ingested by a range of animals including large vertebrates and can deteriorate water quality. However, little is known about…

  • High-altitude adaptations connected with lower risk for chronic diseases

    High-altitude adaptations in the Himalayas may lower risk for some chronic diseases, according to researchers. The Mosuo, a Tibetan-descended population living in the mountains of Southwest China, were found to be at lower risk for hypertension and diabetes-associated anemia than low-altitude Han populations. «Understanding of high-altitude adaptations in human populations has grown tremendously in the…

  • Biodiversity, climate change and the fate of coral reefs

    An international group of researchers representing thousands of coral scientists across the globe is issuing recommendations for new commitments and actions by the world’s policymakers to protect and restore coral reefs. In a paper presented July 20 at the International Coral Reef Symposium, the scientists said that the coming decade will likely offer the last…

  • Cheese making relies on milk proteins to form structure

    Cheese production relies on coagulation of milk proteins into a gel matrix after addition of rennet. Milk that does not coagulate (NC) under optimal conditions affects the manufacturing process, requiring a longer processing time and lowering the cheese yield, which, in turn, has economic impact. Scientists studied the protein composition of milk samples with different…