Showing 20 articles starting at article 441
< Previous 20 articles Next 20 articles >
Categories: Environmental: Water, Geoscience: Volcanoes
Published Women exposed to toxic metals may experience earlier aging of their ovaries
(via sciencedaily.com) Original source Middle-aged women who are exposed to toxic metals may have fewer eggs in their ovaries as they approach menopause, according to new research.
Published 2020 US rule dramatically deregulated wetlands, streams and drinking water
(via sciencedaily.com) Original source New research used machine learning to more accurately predict which waterways are protected by the Clean Water Act. The analysis found that a 2020 Trump administration rule removed Clean Water Act protection for one-fourth of US wetlands and one-fifth of US streams, and also deregulated 30% of watersheds that supply drinking water to household taps.
Published Sparrows uniquely adapted to Bay Area marshes are losing their uniqueness
(via sciencedaily.com) Original source How does loss of habitat affect the animals still living there? A genetic study of saltwater-adapted Savannah sparrows around the San Francisco Bay Area shows that the 90% loss of tidal marsh habitat has led to more interbreeding with freshwater-adapted Savannah sparrows, diminishing their genetic adaptation to saltwater, such as enlarged kidneys and larger beak. This could lessen their ability to live in a saltwater habitat.
Published Researchers advocate for sustainable logging to safeguard against global flood risks
(via sciencedaily.com) Original source It's time to recognize the power of healthy forests in managing global growing flood risk, and to shift towards more sustainable forestry practices and policy.
Published A new design improves water decontamination via plasma jet
(via sciencedaily.com) Original source Two research groups design a plasma (an ionized gas) reactor maintained by microwaves that makes it possible to decontaminate waters with high concentrations of dye.
Published Paper provides a clearer picture of severe hydro hazards
(via sciencedaily.com) Original source A new study now provides a global examination of drought-pluvial volatility -- or the tendency to shift from one weather extreme to another.
Published Global groundwater depletion is accelerating, but is not inevitable
(via sciencedaily.com) Original source Groundwater is rapidly declining across the globe, often at accelerating rates. Researchers now present the largest assessment of groundwater levels around the world, spanning nearly 1,700 aquifers. In addition to raising the alarm over declining water resources, the work offers instructive examples of where things are going well, and how groundwater depletion can be solved. The study is a boon for scientists, policy makers and resource managers working to understand global groundwater dynamics.
Published Injectable water filtration system could improve access to clean drinking water around the world
(via sciencedaily.com) Original source A new portable filtration system collects dirty water with a syringe and injects it into a hydrogel filter that weeds out nearly all tiny particles.
Published Water, water everywhere and now we may have drops to drink
(via sciencedaily.com) Original source Researchers have achieved a major breakthrough in Redox Flow Desalination (RFD), an emerging electrochemical technique that can turn seawater into potable drinking water and also store affordable renewable energy.
Published Discovering the physics behind 300-year-old firefighting methods
(via sciencedaily.com) Original source Inspired by a 1725 fire engine that pumped water at larger distances and higher speeds than previously possible, authors analyzed the pressure chamber's Windkessel effect to capture the physics behind this widely used, enduring technology. They compared the initial state of the chamber, the rate at which bucket brigades could pour water in (volumetric inflow), the length of time pressure builds, and the effects on output flow rate. Next, the authors plan to examine the physiological Windkessel involved in the heart-aorta system.
Published Groundbreaking discovery enables cost-effective and eco-friendly green hydrogen production
(via sciencedaily.com) Original source A research team has developed a novel catalyst for the high-efficiency and stable production of high-purity green hydrogen.
Published Translating nuclear waste site data into microbial ecosystem insights
(via sciencedaily.com) Original source A flagship seven-year study that explores how environmental stresses influence different ecological processes shaping the composition and structure of microbial communities in groundwater has now been published.
Published Efficiently moving urea out of polluted water is coming to reality
(via sciencedaily.com) Original source Researchers have developed a material to remove urea from water and potentially convert it into hydrogen gas. By building these materials of nickel and cobalt atoms with carefully tailored electronic structures, the group has unlocked the potential to enable these transition metal oxides and hydroxides to selectively oxidize urea in an electrochemical reaction. The team's findings could help use urea in waste streams to efficiently produce hydrogen fuel through the electrolysis process, and could be used to sequester urea from water, maintaining the long-term sustainability of ecological systems, and revolutionizing the water-energy nexus.
Published The heat is on: Scientists discover southern Africa's temps will rise past the rhinos' tolerance
(via sciencedaily.com) Original source Southern Africa contains the vast majority of the world's remaining populations of both black and white rhinoceroses (80% and 92%, respectively). The region's climate is changing rapidly as a result global warming. Traditional conservation efforts aimed at protecting rhinos have focused on poaching, but until now, there has been no analysis of the impact that climate change may have on the animals. A research team has recently reported that, though the area will be affected by both higher temperatures and changing precipitation, the rhinos are more sensitive to rising temperatures, which will quickly increase above the animals' acceptable maximum threshold.
Published Climate change isn't producing expected increase in atmospheric moisture over dry regions
(via sciencedaily.com) Original source The warming climate has not lead to an expected increase in atmospheric moisture over arid and semi-arid regions of the world. The finding, which has surprised scientists, indicates that some regions may be even more vulnerable to future wildfires and extreme heat than projected.
Published Let it glow: Scientists develop new approach to detect 'forever chemicals' in water
(via sciencedaily.com) Original source Researchers have created a new way to detect 'forever chemical' pollution in water, via a luminescent sensor.
Published New AI makes better permafrost maps
(via sciencedaily.com) Original source New insights from artificial intelligence about permafrost coverage in the Arctic may soon give policy makers and land managers the high-resolution view they need to predict climate-change-driven threats to infrastructure such as oil pipelines, roads and national security facilities.
Published Stalagmites as climate archive
(via sciencedaily.com) Original source When combined with data from tree-ring records, stalagmites can open up a unique archive to study natural climate fluctuations, a research team has demonstrated. The researchers analyzed the isotopic composition of oxygen in a stalagmite formed from calcareous water in a cave in southern Germany. In conjunction with the data acquired from tree rings, they were able to reconstruct short-term climate fluctuations over centuries and correlate them with historically documented environmental events.
Published A new, rigorous assessment of OpenET accuracy for supporting satellite-based water management
(via sciencedaily.com) Original source Sustainable water management is an increasing concern in arid regions around the world, and scientists and regulators are turning to remote sensing tools like OpenET to help track and manage water resources. OpenET uses publicly available data produced by NASA and USGS Landsat and other satellite systems to calculate evapotranspiration (ET), or the amount of water lost to the atmosphere through soil evaporation and plant transpiration, at the level of individual fields. This tool has the potential to revolutionize water management, allowing for field-scale operational monitoring of water use, and a new study provides a thorough analysis of the accuracy of OpenET data for various crops and natural land cover types.
Published Chasing the light: Study finds new clues about warming in the Arctic
(via sciencedaily.com) Original source The Arctic, Earth's icy crown, is experiencing a climate crisis like no other. It's heating up at a furious pace -- four times faster than the rest of our planet. Researchers are pulling back the curtain on the reduction of sunlight reflectivity, or albedo, which is supercharging the Arctic's warming.