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ScienceDaily: Plants & Animals News |
| Climate change and civil unrest among the ancient Maya Posted: 19 Jul 2022 03:42 PM PDT An extended period of turmoil in the prehistoric Maya city of Mayapan, in the Yucatan region of Mexico, was marked by population declines, political rivalries and civil conflict. Between 1441 and 1461 CE the strife reached an unfortunate crescendo -- the complete institutional collapse and abandonment of the city. This all occurred during a protracted drought. |
| Marijuana use is much more common in US states that have legalized recreational cannabis use Posted: 19 Jul 2022 01:21 PM PDT A new study found that rates of cannabis use and daily cannabis use have increased across the U.S., and current cannabis use and daily use are substantially higher among individuals residing in states that have legalized recreational cannabis use. Rates of cannabis use are even higher among Americans 12 and older who smoke cigarettes, and who reside in states with recreational cannabis laws, compared to those who live in states where cannabis was illegal in 2017. |
| Songbird can keep time with the best of them Posted: 19 Jul 2022 01:21 PM PDT When it comes to keeping time, an unassuming species of songbird is on a par with professional musicians, according to new research. |
| Lymphatics help 'seed' early brain cells in zebrafish Posted: 19 Jul 2022 01:21 PM PDT A recent article demonstrated how lymphatics -- which remove waste from the rest of the body -- are also associated with microglia and brain development in zebrafish. |
| New model predicts how temperature affects life from quantum to classical scales Posted: 19 Jul 2022 01:20 PM PDT A new theory explains how every process depends on temperature. This theory could help researchers make accurate predictions in a range of areas, including biological responses to climate change, the spread of infectious diseases, and food production. |
| New database to support conservation Posted: 19 Jul 2022 10:02 AM PDT Scientists have created a new tool to fill the large gaps in our understanding of where and how human activities threaten wild species around the world. |
| Three new species of black-bellied salamander found in southern Appalachian Mountains Posted: 19 Jul 2022 10:02 AM PDT Three new species of black-bellied salamander have been discovered. The new salamanders, which are found in the southern Appalachian Mountains of the eastern United States, stem from black-bellied populations that were long considered to be a single species. |
| Novel HIV combination therapies could prevent viral escape and rebound Posted: 19 Jul 2022 08:34 AM PDT Carefully designed cocktails of broadly neutralizing antibodies (bNAbs) could help treat HIV while minimizing the risk of the virus escaping treatment, suggests a new study. |
| Arctic shrub expansion limited by seed dispersal and wildfire Posted: 19 Jul 2022 07:23 AM PDT Scientists investigating the growth of Arctic vegetation have found that seed dispersal and fire will slow its land expansion in the long term, despite more favorable conditions from a warming planet. |
| Invasive fish: Sperm hijacking as success strategy Posted: 19 Jul 2022 06:11 AM PDT The Prussian carp is considered one of the most successful invasive fish species in Europe. Its ability to reproduce asexually gives it a major advantage over competing fish. An international research team has now managed to describe the complete genome of the Prussian carp for the first time. This also provides a much better understanding of its peculiar reproductive method. |
| New links found between dogs' smell and vision Posted: 18 Jul 2022 03:10 PM PDT Researchers have provided the first documentation that dogs' sense of smell is integrated with their vision and other unique parts of the brain, shedding new light on how dogs experience and navigate the world. |
| Designing roots to penetrate hard soils could help climate proof crops Posted: 18 Jul 2022 12:43 PM PDT Scientists have discovered how to design cereal roots able to continue growing in hard soils by altering their ability to penetrate, enabling roots to access sources of water deeper in soil, and helping 'climate-proof' vital crops in response to changing UK rain fall patterns. |
| Towards stable, sustained Raman imaging of large samples at the nanoscale Posted: 15 Jul 2022 11:21 AM PDT Optical nano-imaging techniques find immense applications in nanotechnology for visualizing nanoscale defects in samples. However, it is challenging to image large micron-sized samples at nanoscale resolution owing to signal distortions resulting from unavoidable thermal and mechanical drifts of the system over time. Now, researchers from Japan have developed an ultrastable nano-imaging system that successfully detects unique nanoscale defects not observed in conventional nano-imaging in micron-scale tungsten disulfide samples, widening the technique's scope to biological samples. |
| Researcher links real encounter with 'milky seas' to satellite pictures Posted: 15 Jul 2022 11:20 AM PDT An atmospheric researcher compared satellite observations of a 2019 milky sea event off the coast of Java to photographic evidence from the sailing ship Ganesha, a 16-meter private yacht. The yacht happened to be sailing in the milky seas at the same time. |
| The hippo and the hydra: Evolutionary origin of the body axis Posted: 15 Jul 2022 07:58 AM PDT A new study describes the formation of the body axis in the immortal freshwater polyp Hydra. This is controlled by the so-called hippo signaling pathway, a molecular biological process that, among other functions, ensures that our organs do not continue to grow indefinitely. |
| Posted: 15 Jul 2022 07:57 AM PDT Fresh vegetables in vinegar, similar to pickles, are a perfect side dish, commonly served with Japanese cooking. One traditional side dish called sunomono, a cool cucumber or seaweed salad, provided a unique opportunity as a source of dietary vinegar. A new observational study noted that men over 40 who eat sunomono at least once a month were significantly more likely to be in lower blood pressure categories. |
| Poxvirus proteins enable early strike on immune defenses Posted: 14 Jul 2022 11:51 AM PDT Pox viruses are able to get a head start on infecting a host by delivering a package of proteins that directly interferes with the body's innate immune system. |
| Posted: 14 Jul 2022 07:30 AM PDT A new study, conducted on more than 140 samples from 12 monkeypox-infected patients, contributes to a better understanding of the dynamics of disease transmission. |
| Defending the validity of Stokes-Einstein equation in living systems Posted: 13 Jul 2022 05:13 PM PDT New research defends the validity of the Stokes-Einstein equation, one of Albert Einstein's most famous equations, as it relates to biology. The research will help scientists better understand antibiotic resistance and the mechanical properties of cancer cells. |
| How gut microbes can evolve and become dangerous Posted: 13 Jul 2022 01:33 PM PDT In a new study, researchers describe how gut bacteria can evolve over time, becoming more pathogenic by gaining the ability to migrate across the gut barrier and persist in organs outside of the intestine, thereby driving chronic inflammation and associated pathologies. |
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