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ScienceDaily: Top Environment 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. |
Glacial microclimates mimic climate change Posted: 19 Jul 2022 01:21 PM PDT A cool pocket climate around the snout of a glacier could help researchers predict how forests will respond to fast climate change, according to the authors of a new case study of a rapidly advancing and retreating glacier in Alaska. |
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. |
Toward manufacturing semitransparent solar cells the size of windows Posted: 19 Jul 2022 08:34 AM PDT In an important step toward bringing transparent solar cells to home windows, researchers have developed a way to manufacture their highly efficient and semitransparent solar cells. |
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. |
New approach to exposing illegal and informal mercury trading Posted: 19 Jul 2022 06:12 AM PDT The Minamata Convention (MC) aims to restrict and limit the trading of mercury, a highly toxic pollutant. While most countries involved in artisanal and small-scale gold mining (ASGM), the biggest source of mercury pollution, are MC parties, its efficacy has remained unclear. Researchers have now developed a new method of examining global mercury trade data inconsistencies based on estimating and comparing the mercury input of ASGM activities to the total mercury available domestically. |
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. |
Climate warming, water management impacts on West Florida's continental shelf Posted: 19 Jul 2022 06:11 AM PDT Scientists conducted a study that provides an assessment of the potential effects of climate warming and water management of the West Florida Shelf dynamics during two particular events that affect its hydrology through the lens of a very high-resolution model. |
New study finds environmental injustice is key to decoding climate change debate Posted: 19 Jul 2022 06:11 AM PDT A new study found that Miami's history of environmental injustice was the key to understanding why different groups were often talking at cross-purposes, leading to misunderstandings and disagreements about climate change and what they believe should be done about it. |
Carbon captured and stored since 1996 is significant but overestimated by up to 30 per cent Posted: 19 Jul 2022 06:11 AM PDT Although a significant amount of carbon has been caught and stored so far, governments should curb overestimation. |
Lakes in hot water, climate change creating a cauldron of issues Posted: 18 Jul 2022 03:10 PM PDT As intense heatwaves grip the United Kingdom, Spain, France and Portugal, at times exceeding temperatures 40C, as well as parts of North America and Asia, lakes around the world are feeling the heat from climate change, which is creating a cascade of ecological and environmental issues. Northern-most lakes are considered the bellwethers of environmental change, but research shows consequences of climate change can affect any of the more than 100 million lakes in the world. |
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. |
Air pollution caused 2,780 deaths, illnesses, and IQ loss in children in Massachusetts in 2019 Posted: 18 Jul 2022 06:44 AM PDT Air pollution, climate change, and public health are closely linked, as a new study shows. The report details on a town-by-town basis the deaths and illnesses caused by air pollution in Massachusetts, and also outlines steps to curb fine particulate pollutants. Nationally, the study offers a model that can be followed by other states using public data and open-source software, according to a public health expert and practitioner. |
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. |
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