Showing 20 articles starting at article 101
< Previous 20 articles Next 20 articles >
Categories: Biology: Developmental, Geoscience: Geography
Published Waters along Bar Harbor, Acadia home to billions of microplastics
(via sciencedaily.com) Original source Researchers reveal there are an estimated 400 billion microplastic fibers on the surface of Frenchman Bay, which borders Bar Harbor and Acadia National Park in Maine, and several connected rivers and estuaries where freshwater from rivers meet salty seawater. The watershed contains an average of 1.8 fibers per liter of water. The team also investigated how microplastics traveled throughout the watershed by sampling water from nine sites on Mount Desert Island, particularly within Bar Harbor.
Published Researchers are closing in on a mouse model for late-onset Alzheimer's
(via sciencedaily.com) Original source Researchers are working to create the first strain of mice that's genetically susceptible to late-onset Alzheimer's, with potentially transformative implications for dementia research.
Published How Saharan dust regulates hurricane rainfall
(via sciencedaily.com) Original source New research underscores the close relationship between dust plumes transported from the Sahara Desert in Africa, and rainfall from tropical cyclones along the U.S. Gulf Coast and Florida.
Published COVID-19 pandemic slowed progress towards health-related Sustainable Development Goals and increased inequalities
(via sciencedaily.com) Original source The COVID-19 pandemic significantly widened existing economic and health disparities between wealthy and low-income countries and slowed progress toward health-related Sustainable Development Goals (SDGs), according to a new study.
Published Southern Ocean absorbing more carbon dioxide than previously thought, study finds
(via sciencedaily.com) Original source New research has found that the Southern Ocean absorbs more carbon dioxide (CO2) than previously thought. Using direct measurements of CO2 exchange, or fluxes, between the air and sea, the scientists found the ocean around Antarctica absorbs 25% more CO2 than previous indirect estimates based on shipboard data have suggested.
Published How well does tree planting work in climate change fight? It depends
(via sciencedaily.com) Original source Using trees as a cost-effective tool against climate change is more complicated than simply planting large numbers of them, an international collaboration has shown.
Published Whale shark tracked for record-breaking four years
(via sciencedaily.com) Original source Researchers have been tracking a 26-foot endangered whale shark -- named 'Rio Lady' -- with a satellite transmitter for more than four years -- a record for whale sharks and one of the longest tracking endeavors for any species of shark.
Published Research sheds light on the role of PTPRK in tissue repair and cancer
(via sciencedaily.com) Original source New research has advanced our knowledge of multiple roles for PTPRK, a receptor tyrosine phosphatase linked to the regulation of cell-cell adhesion, growth factor signalling and tumor suppression. Through a characterization of the function of PTPRK in human cell lines and mice, the team distinguished catalytic and non-catalytic functions of PTPRK. The findings extend what is known about the signalling mechanisms involving PTPRK as a phosphatase and its role in colorectal health but also shed new light on the extent of its function via non-catalytic signalling mechanisms.
Published Researchers warn of unprecedented arsenic release from wildfires
(via sciencedaily.com) Original source The wildfire season of 2023 was the most destructive ever recorded in Canada and a new study suggests the impact was unprecedented. It found that four of the year's wildfires in mine-impacted areas around Yellowknife, Northwest Territories potentially contributed up to half of the arsenic that wildfires emit globally each year.
Published Dual action antibiotic could make bacterial resistance nearly impossible
(via sciencedaily.com) Original source New drug that disrupts two cellular targets would make it much harder for bacteria to evolve resistance.
Published Heat-sensitive trees move uphill seeking climate change respite
(via sciencedaily.com) Original source Trees in the Brazilian Atlantic Forest are migrating in search of more favourable temperatures with species in mountain forests moving uphill to escape rising heat caused by climate change.
Published Hot traces in rock
(via sciencedaily.com) Original source Fluids circulating underground change rocks over the course of time. These processes must be taken into account if they are to be used as a climate archive. Researchers have used 380-million-year-old limestones from Hagen-Hohenlimburg to show in detail which climate information is still preserved in the rock.
Published Fruit fly post-mating behavior controlled by male-derived peptide via command neurons, study finds
(via sciencedaily.com) Original source Scientists have succeeded in pinpointing the neurons within a female fruit fly's brain that respond to signals from the male during mating.
Published Ecologists discover rare fiddler crab species on Hong Kong coast highlighting the impact of climate change and coastal development
(via sciencedaily.com) Original source Researchers have made an exciting discovery on the Hong Kong coast. They have identified two fiddler crab species: Tubuca dussumieri, previously recorded in old literature but never confirmed in recent times, and Tubuca. coarctata, which has never been seen in Hong Kong. These findings not only confirm the presence of these insular species in Hong Kong but also explore the potential impact of climate change on their distribution.
Published Controlling mosquito populations through genetic breeding
(via sciencedaily.com) Original source Researchers have found a new way to identify genetic targets useful for control of mosquito populations, potentially offering an alternative to insecticides. Their study focused on the genetic basis of species incompatibility. They crossed Ae. aegypti, a major global arboviral disease vector, and its sibling species, Ae. mascarensis, from the Indian Ocean. When offspring is crossed back with one parent, about 10 percent of the progeny becomes intersex and is unable to reproduce.
Published Transient structure in fly leg holds clue to insect shape formation
(via sciencedaily.com) Original source A little leg may reveal something big about how closely related insect species can drastically differ in body shape, according to a new study. The team imaged live cells of fruit flies in the last stages of development over several days and found a new structure that appears to help guide a section of the leg into its final shape.
Published Deep-ocean floor produces its own oxygen
(via sciencedaily.com) Original source An international team of researchers has discovered that metallic minerals on the deep-ocean floor produce oxygen -- 13,000 feet below the surface. Discovery challenges long-held assumptions that only photosynthetic organisms generate Earth's oxygen. Minerals at the abyssal seafloor appear to act like geobatteries to produce oxygen in a process that does not require sunlight.
Published How pollution may remain in water after oil spill cleanups
(via sciencedaily.com) Original source The way oil drops break up at the water's surface means some oil may not get cleaned up after a spill.
Published Rural belts around cities can reduce urban summer temperatures by up to 0.5°C
(via sciencedaily.com) Original source The key to cooling 'urban heat islands' may lie in the countryside, according to a new study.
Published Sea ice's cooling power is waning faster than its area of extent
(via sciencedaily.com) Original source As sea ice disappears and grows less reflective, the Arctic has lost around a quarter of its cooling power since 1980, and the world has lost up to 15%, according to new research.