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Today โ€” 14 January 2025Latest Science News -- ScienceDaily

Circulation problems in the brain's seat of memory linked to mild cognitive impairment in older adults

14 January 2025 at 01:28
Mild cognitive impairment is linked to blood vessel dysfunction in the brain's temporal lobes -- the seat of memory -- according to a new study. The findings, seen in people with and without signs of amyloid buildup in the brain, suggest that microvascular trouble may be an important, early biomarker for dementia as well as a potential target for therapy.

Wind turbines impair the access of bats to water bodies in agricultural landscapes

13 January 2025 at 21:11
Bats depend on open bodies of water such as small ponds and lakes for foraging and drinking. Access to water is particularly important for survival in the increasingly hot and dry summers caused by climate change, the time when female bats are pregnant and rear their young. A scientific team has now shown that access to drinking sites is hampered by wind turbines in agricultural landscapes: Many bat species avoid the turbines and water bodies located close to the turbines for several kilometers.

Hubble reveals surprising spiral shape of galaxy hosting young jet

13 January 2025 at 21:11
The night sky has always played a crucial role in navigation, from early ocean crossings to modern GPS. Besides stars, the United States Navy uses quasars as beacons. Quasars are distant galaxies with supermassive black holes, surrounded by brilliantly hot disks of swirling gas that can blast off jets of material. Following up on the groundbreaking 2020 discovery of newborn jets in a number of quasars, aspiring naval officer Olivia Achenbach of the United States Naval Academy has used NASA's Hubble Space Telescope to reveal surprising properties of one of them, quasar J0742+2704.

A 'volume dial' for missed signals produced by our bodies

13 January 2025 at 21:11
Scientists have adapted a sensing platform to detect and even measure chemicals at low enough concentrations to have use outside the lab. The system, which is 10 times more sensitive than previous sensors built by the team, opens the door for the system to be applied to disease detection and monitoring in the human body for nucleic acids and bacteria.

Atop the Oregon Cascades, team finds a huge buried aquifer

13 January 2025 at 21:11
Scientists have mapped the amount of water stored beneath volcanic rocks at the crest of the central Oregon Cascades and found an aquifer many times larger than previously estimated -- at least 81 cubic kilometers. The finding has implications for the way scientists and policymakers think about water in the region -- an increasingly urgent issue across the Western United States as climate change reduces snowpack, intensifies drought and strains limited resources.

DNA nanorobots can alter artificial cells

13 January 2025 at 18:47
Scientists have succeeded in controlling the structure and function of biological membranes with the help of 'DNA origami'. The system they developed may facilitate the transportation of large therapeutic loads into cells. This opens up a new way for the targeted administration of medication and other therapeutic interventions. Thus, a very valuable instrument can be added to the toolbox of synthetic biology.

Wrong place, wrong time: Why Zika virus hijacks a protein needed for brain growth

13 January 2025 at 18:43
The mosquito-borne Zika virus is known for causing microcephaly, a birth defect in which abnormal brain development results in a smaller-than-expected head. A new study shows that the Zika virus hijacks a host protein called ANKLE2, which happens to be important for brain development, to assist its own reproduction. Because Zika, unlike most related viruses, can cross the placenta, this can have disastrous consequences in pregnancy.

Differences in strength by position among football players

13 January 2025 at 18:41
It's long been known that different positions on the football field fit different body types. A study led by the University of Kansas has gone beyond knowing that linemen are bigger with more body mass than receivers and tested a team of college football starters, finding differences in strength, power, jumping ability and more. The findings could help improve strength training designed to optimize performance for different types of players, researchers argue.

New research highlights trends in ADHD diagnoses

13 January 2025 at 18:41
New research identifies differing trends in attention-deficit/hyperactivity disorder (ADHD) diagnoses among adolescents and adults, including an increase among adults from 2020 to 2023. The study found a significant downward trends in ADHD incidence among adults from 2016 to 2020 and adolescents from 2016 to 2018. The ADHD incidence rate remained stable for adolescents in subsequent years.
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