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ScienceDaily: Earth & Climate News |
| New type of earthquake discovered Posted: 06 Dec 2021 08:31 AM PST A research team has documented a new type of earthquake in an injection environment in British Columbia, Canada. The seismic events are slower than conventional earthquakes. Their existence supports a scientific theory that until now had not been sufficiently substantiated by measurements. |
| Too dry, too hot, or too wet: Increasing weather persistence in European summer Posted: 06 Dec 2021 08:30 AM PST Global warming makes long lasting weather situations in the Northern hemisphere's summer months more likely -- which in turn leads to more extreme weather events, a novel analysis of atmospheric images and data finds. These events include heatwaves, droughts, intense rainy periods. Especially in Europe, but also in Russia, persistent weather patterns have increased in number and intensity over the last decades with weather extremes occurring simultaneously at different locations. |
| Diagnosis from the sky: Catching insect infestations within forests before it’s too late Posted: 06 Dec 2021 08:30 AM PST Researchers are working to improve remote sensing technology's ability to detect subtle changes in real-time across the landscape, namely to diagnose insect infestations in forests before irreparable damage is done. |
| Migratory birds have lighter-colored feathers Posted: 06 Dec 2021 08:30 AM PST Migratory birds are specially adapted to find their way over extreme distances that represent remarkable tests of endurance. Now, researchers have discovered an unexpected way that migratory birds keep their cool during such arduous journeys: lighter-colored feathers. |
| Big gaps in quest to sequence genomes of all animals Posted: 06 Dec 2021 06:06 AM PST Efforts to sequence the genomes of the world's animals tend to focus on those that most resemble humans with the work conducted almost entirely in the Global North, according to new analysis. Researchers warn current efforts are overlooking huge swathes of diversity and opportunity. Their analysis found that nearly 3,300 animal species have had their genomes sequenced and assembled, a process that gives organizational context to an organism's DNA. While the rate is picking up, the number is small in comparison to the world's 1.66 million animal species, and vertebrates make up the lion's share of current sequences. They account for 54% of all the assemblies, despite representing only 3.9% of animal species. In contrast, the invertebrates of the Arthropoda phylum, which includes insects and spiders, comprise only 34% of current datasets while representing 78.5% of all species. |
| Microplastic pollution aids antibiotic resistance Posted: 06 Dec 2021 05:02 AM PST Microplastics dispersed in the environment may enhance antibiotic resistance. A study found the chemical-leaching plastics draw bacteria and other vectors and make them susceptible to antibiotic resistant genes. |
| Trees are biggest methane ‘vents’ in wetland areas – even when they’re dry Posted: 05 Dec 2021 06:24 PM PST Most of the methane gas emitted from Amazon wetlands regions is vented into the atmosphere via tree root systems -- with significant emissions occurring even when the ground is not flooded, say researchers. |
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