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Categories: Archaeology: General, Environmental: Water

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Environmental: Water
Published

PFA exposure may delay girls' puberty, research shows      (via sciencedaily.com)     Original source 

New research shows that exposure to PFAS may delay the onset of puberty in girls. The study is the first longitudinal research that included the component of the role hormones play in the delay, according to the study's corresponding author.

Environmental: Biodiversity Environmental: Ecosystems Environmental: General Environmental: Water Geoscience: Environmental Issues Geoscience: Geochemistry Geoscience: Geography
Published

Plastic cloud: New study analyzes airborne microplastics in clouds      (via sciencedaily.com)     Original source 

Plastic waste that accumulates on land eventually ends up in the ocean as microplastics. However, it is now speculated that microplastics are also present in the atmosphere, contained in clouds. In a new study, researchers analyzed cloud water samples from high-altitude mountains in Japan to ascertain the amount of microplastics in them. They also shed light on how these airborne particles influence cloud formation and their negative impact on the climate.

Chemistry: Biochemistry Chemistry: Thermodynamics Environmental: General Environmental: Water Geoscience: Environmental Issues
Published

Desalination system could produce freshwater that is cheaper than tap water      (via sciencedaily.com)     Original source 

Researchers have designed a new solar desalination system that takes in saltwater and heats it with natural sunlight. The system flushes out accumulated salt, so replacement parts aren't needed often, meaning the system could potentially produce drinking water at a rate and price that is cheaper than tap water.

Environmental: Ecosystems Environmental: General Environmental: Water Geoscience: Environmental Issues Geoscience: Geochemistry
Published

Microplastics are found in cave water and sediment      (via sciencedaily.com)     Original source 

Researchers report finding high concentrations of microplastics present in a Missouri cave system that had been closed to human visitors for 30 years.

Biology: Biochemistry Biology: Botany Biology: General Ecology: Endangered Species Ecology: General Ecology: Invasive Species Ecology: Nature Ecology: Research Environmental: Ecosystems Environmental: General Environmental: Water
Published

How to save plants from climate change? Just ask them      (via sciencedaily.com) 

Climate change and a range of human-caused factors have disrupted the habitats of many California native trees and other plant species. Efforts to protect or relocate plant species would be bolstered by understanding which habitats are best suited for each species. A new study identified a range of characteristics from more than 100 types of plants that can be analyzed to determine each species' preferred temperature and rainfall amount.

Environmental: Water Geoscience: Environmental Issues Geoscience: Geography Geoscience: Oceanography Paleontology: Climate
Published

Antarctica's glacial border migrates for miles with the tide      (via sciencedaily.com)     Original source 

New measurements of how boundary between onshore glacier and floating ice shelf glides back-and- forth could help predict melting.

Environmental: Water Geoscience: Earth Science Geoscience: Earthquakes Geoscience: Geology
Published

Exploring the effect of water on seismic wave attenuation in the upper mantle      (via sciencedaily.com)     Original source 

The mechanism facilitating the smooth movement of the oceanic lithosphere over the underlying asthenosphere (upper mantle) remains poorly understood. Recently, researchers from Japan investigated the effect of water on the seismic properties of olivine rocks, finding that water retention in the asthenosphere can induce sharp drops in shear wave velocity. This also explained other seismic changes observed at the lithosphere-asthenosphere boundary. These findings provide invaluable insights into the diverse seismic activities on Earth.

Biology: Cell Biology Biology: Zoology Environmental: Water Geoscience: Geochemistry
Published

Double trouble: Infamous 'eagle killer' bacterium produces not one, but two toxins      (via sciencedaily.com)     Original source 

The cyanobacterium Aetokthonos hydrillicola produces not just one, but two highly potent toxins. Scientists describe the second toxin, which had remained elusive until now. Even in low concentrations, it can destroy cells and is similar to substances currently used in cancer treatment. Two years ago, the same team established that the first toxin from the cyanobacterium is the cause of a mysterious disease among bald eagles in the USA.

Biology: Biochemistry Biology: General Biology: Marine Ecology: General Ecology: Nature Ecology: Research Ecology: Sea Life Environmental: Ecosystems Environmental: Water
Published

Theories about the natural world may need to change to reflect human impact      (via sciencedaily.com) 

New research has validated at scale, one of the theories that has underpinned ecology for over half a century. In doing so, the findings raise further questions about whether models should be revised to capture human impacts on natural systems.

Biology: Biochemistry Environmental: General Environmental: Water Geoscience: Environmental Issues Geoscience: Geochemistry
Published

Waterfleas hold key to cleaner environment and better human health      (via sciencedaily.com)     Original source 

Tiny waterfleas could play a pivotal role in removing persistent chemical pollutants from wastewater -- making it safe to use in factories, farms and homes, a new study reveals.

Biology: Botany Ecology: Endangered Species Ecology: General Ecology: Research Environmental: Ecosystems Environmental: General Environmental: Water Geoscience: Environmental Issues
Published

Despite being properly treated and highly diluted, wastewater still impacts on the river ecosystem      (via sciencedaily.com)     Original source 

An experiment using water from a large wastewater treatment plant has shown that this water continues to affect river diversity and the trophic web (food web) despite being properly treated and highly diluted before discharge. The study shows that the limits currently in place and the procedures used to treat wastewater may not be sufficient to protect the natural properties of food webs.

Biology: Marine Ecology: Sea Life Environmental: General Environmental: Water Geoscience: Environmental Issues Geoscience: Geography
Published

Rivers contain hidden sinks and sources of microplastics      (via sciencedaily.com)     Original source 

New research represents the first combined analysis of microplastics in water, sediment and air around a major river system. It found significant quantities of microplastics trapped in riverbed sediments, and also found they were being transported through the air and the flow of the river.

Environmental: General Environmental: Water Geoscience: Earth Science Geoscience: Geography Geoscience: Oceanography Geoscience: Severe Weather
Published

New study definitively confirms Gulf Stream weakening, understanding the changes could help predict future trends in extreme events      (via sciencedaily.com)     Original source 

The Gulf Stream transport of water through the Florida Strait has slowed by 4% over the past four decades, with a 99% certainty that this weakening is more than expected from random chance, according to a new study.

Biology: Marine Ecology: Nature Ecology: Sea Life Environmental: Biodiversity Environmental: Ecosystems Environmental: Water Geoscience: Geochemistry Geoscience: Oceanography
Published

Ocean acidification makes ecologically important seaweed species fragile      (via sciencedaily.com)     Original source 

Ocean acidification will likely almost triple by the end of the century -- a drastic environmental change that could impact important marine species like fleshy seaweeds, algae that grow vertically and promote biodiversity in more than a third of the world's coastline. To get a better idea of how seaweeds might fare in a rapidly acidifying ocean, a team of marine scientists subjected a common fleshy seaweed species to the acidification levels expected by the end of the century. They report that increased acidification impacted the seaweed's chemical balance, made both its structure and its tissues weaker, and reduced its overall chances of survival.

Energy: Technology Engineering: Nanotechnology Environmental: General Environmental: Water Physics: General
Published

Nanofluidic device generates power with saltwater      (via sciencedaily.com)     Original source 

There is a largely untapped energy source along the world's coastlines: the difference in salinity between seawater and freshwater. A new nanodevice can harness this difference to generate power.

Anthropology: Cultures Anthropology: Early Humans Anthropology: General Archaeology: General Geoscience: Environmental Issues Paleontology: Fossils Paleontology: General
Published

Pollen analysis suggests peopling of Siberia and Europe by modern humans occurred during a major Pleistocene warming spell      (via sciencedaily.com)     Original source 

A new study appearing in Science Advances compares Pleistocene vegetation communities around Lake Baikal in Siberia, Russia, to the oldest archeological traces of Homo sapiens in the region. The researchers use the 'remarkable evidence' to tell a compelling story from 45,000-50,000 years ago with new detail: how the first humans migrated across Europe and Asia.

Anthropology: Early Humans Anthropology: General Archaeology: General Environmental: Ecosystems
Published

Probing the deep genetic structure of Africa      (via sciencedaily.com)     Original source 

Using ancestry decomposition techniques an international research team has revealed a deeply divergent ancestry among admixed populations from the Angolan Namib desert. This unique genetic heritage brings the researchers closer to understanding the distribution of genetic variation in the broader region of southern Africa before the spread of food production.

Ecology: Nature Environmental: Ecosystems Environmental: General Environmental: Water Geoscience: Geochemistry
Published

Re-wetting is key for boosting CO2 storage in southern US peatlands      (via sciencedaily.com)     Original source 

Maintaining a water level between 20 and 30 centimeters below the local water table will boost southern peatlands' carbon storage and reduce the amount of greenhouse gases they release back into the atmosphere during dry periods by up to 90%, a new study finds. Applying this guideline on 100,000 acres of restored or partially restored peatlands across the Southeast could reduce U.S. carbon losses by 2% to 3% of our total national goal.

Environmental: Water Geoscience: Geography Geoscience: Oceanography
Published

New development model for the world's third-longest river      (via sciencedaily.com)     Original source 

Researchers reveal rapid fluvial incision attributed to the growth of high topography in China's Yangtze River.