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ScienceDaily: Plants & Animals News |
| Effectiveness of antibiotics significantly reduced when multiple bugs present Posted: 19 Mar 2022 05:16 AM PDT A study has found that much higher doses of antibiotics are needed to eliminate a bacterial infection of the airways when other microbes are present. It helps explain why respiratory infections often persist in people with lung diseases such as cystic fibrosis despite treatment. |
| Researchers use unique ingredient to strengthen bamboo Posted: 18 Mar 2022 01:14 PM PDT Researchers have adapted a technique -- originally designed to embalm human remains -- to strengthen the properties of biocomposites and make them stronger. With the innovation of new materials and green composites, it is easy to overlook materials like bamboo and other natural fibers, explains one of the researchers. These fibers are now used in many applications such as clothing, the automotive industry, packaging and construction. |
| Antabuse may help revive vision in people with progressive blinding disorders Posted: 18 Mar 2022 01:14 PM PDT Animal and cell studies show that as retinal cells die in degenerative eye diseases, they make other cells hyperactive, creating noise that further obscures vision. Tests to prove this in humans are hard to conduct, however. Antabuse, an approved drug used to wean people off alcohol, should tamp down this hyperactivity and conclusively show whether hyperactivity plays a role in humans, potentially driving work to find better drugs to help those with progressive vision loss. |
| Ancient ancestors evolved to be strong and snappy Posted: 18 Mar 2022 01:14 PM PDT Researchers show that the earliest jaws in the fossil record were caught in a trade-off between maximizing their strength and their speed. |
| New, possibly arboreal rice rat species discovered in Ecuador Posted: 18 Mar 2022 08:02 AM PDT Three expeditions led an international research to the Cordillera de Kutukú, an isolated mountain range in Ecuador, to find just one specimen of the previously unknown species. The find in the Amazonian side of the Andes underlines the valuable biological role of this mountainous region. |
| Marijuana for medical use may result in rapid onset of cannabis use disorder Posted: 18 Mar 2022 08:02 AM PDT A new study shows that using cannabis products to treat pain, anxiety and depression failed to improve these symptoms while doubling the risk of developing the addictive symptoms of cannabis use disorder. People seeking cannabis to treat symptoms of anxiety and depression were at greatest risk of CUD. Contrary to evidence-based medicine, people with medical marijuana cards choose their own products and dosing, suggesting the need for better controls over dispensing, use, and professional follow-up of these patients. |
| Regrown tropical forests may have short lifespans, says new study Posted: 18 Mar 2022 07:49 AM PDT Preventing the re-clearing of second-growth forests is a major challenge for restoration efforts in tropical regions, according to a new study. The study found that a third of regenerating areas in the Brazilian Atlantic Forest were cut down again, most after just 4 to 8 years of regeneration. |
| Industrial discharge is the dominant mercury source in Korea’s west coast Posted: 18 Mar 2022 06:21 AM PDT Researchers have used mercury (Hg) stable isotopes to verify the Hg sources in the sediment and fish along the west coast of Korea. |
| New insight into the possible origins of life Posted: 18 Mar 2022 05:02 AM PDT Researchers have for the first time been able to create an RNA molecule that replicates, diversifies and develops complexity, following Darwinian evolution. This has provided empirical evidence that simple biological molecules can lead to the emergence of complex lifelike systems. |
| Massive study shows urbanization drives adaptive evolution Posted: 17 Mar 2022 01:36 PM PDT A massive study on a tiny roadside weed shows urbanization is leading to adaptive evolution at a global scale. Scientists from 160 cities across six continents collected more than 110,000 samples of white clover plants in urban, suburban, and rural areas to study urbanization's effects on the plants. |
| How cattle ranchers in Brazil could help reduce carbon emissions Posted: 17 Mar 2022 01:36 PM PDT Providing customized training to Brazilian ranchers can not only help keep carbon in the ground, but improve their livelihoods and mitigate climate change, according to new research. |
| As oceans warm, marine cold spells are disappearing Posted: 17 Mar 2022 01:34 PM PDT Marine cold spells are cold versions of heat waves: periods of exceptionally cold water, able to hurt or help the ecosystems they hit. Today, the oceans experience just 25% of the number of cold spell days they did in the 1980s, and cold spells are about 15% less intense, researchers found. Weaker cold spells could mean they're less likely to cause mass die-off events, but having fewer cold spells also means refuges and recovery periods from marine heat waves are disappearing. |
| Chemists find a quick way to synthesize novel neuroactive compounds found in rainforest tree Posted: 17 Mar 2022 11:37 AM PDT A potential cornucopia of neuroactive compounds, which might yield clues to the design of future psychiatric and neurological drugs, has become more accessible to synthetic chemists. |
| Smoke from major wildfires destroys the ozone layer Posted: 17 Mar 2022 11:37 AM PDT A new study shows that smoke from wildfires destroys the ozone layer. Researchers caution that if major fires become more frequent with a changing climate, more damaging ultraviolet radiation from the sun will reach the ground. |
| Rapid adaptation in fruit flies Posted: 17 Mar 2022 11:37 AM PDT Evolution is normally considered to be a gradual process, unfolding over long timescales. But new findings show that widespread physical and genomic adaptation to the environment can occur within just weeks. |
| Midwestern US has lost 57. 6 trillion metric tons of soil due to agricultural practices Posted: 16 Mar 2022 08:49 AM PDT A new study shows that, since Euro-American settlement approximately 160 years ago, agricultural fields in the midwestern U.S. have lost, on average, two millimeters of soil per year. This is nearly double the rate of erosion that the USDA considers sustainable. Furthermore, USDA estimates of erosion are between three and eight times lower than the figures reported in the study. Finally, the study's authors conclude that plowing, rather than the work of wind and water, is the major culprit. |
| Enhancing the drug development process with more precise animal models Posted: 16 Mar 2022 07:04 AM PDT A research team has verified the mechanism behind the difference of gene regulatory networks of animal model and human using big data. |
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