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Science News Archive 2019


Page 85 of 486

Let there be...a new light

Researchers have synthesized a new type of chiral light that can tell right- and left-handed molecules apart. This innovative light interacts differently with each type of molecule, allowing for precise control over chemical reactions and potential applications in drug development.

Apple iPhone 17 Pro

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Protected areas and anthropogenic pressures

Researchers analyzed 12,315 protected areas across 152 countries to assess their impact on reducing anthropogenic pressures. Protected areas in temperate and forested regions have slowed human pressure, with countries with higher socioeconomic development experiencing lower rate increases.

Biomarker for schizophrenia can be detected in human hair

A study found that a subtype of schizophrenia is related to abnormal hydrogen sulfide levels in the brain, which can act as a biomarker. Higher than normal levels of the enzyme Mpst were detected in postmortem brains and hair follicles from people with schizophrenia.

Make fungi think they're starving to stop them having sex, say scientists

Researchers at the University of Bath have characterized receptors unique to fungi that prevent sexual reproduction, which could be targeted to slow down fungal evolution. By making fungi believe they are starving, these receptors could inhibit sex and increase the shelf life of resistant crops and antifungal compounds.

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Aranet4 Home CO2 Monitor

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Snail habitats and schistosomiasis transmission

Researchers used drone and satellite imagery to map snail habitats in the Lower Senegal River Basin, finding that non-emergent vegetation was a stronger predictor of human infection than host snail counts. Removing this vegetation may benefit snail control efforts, reducing schistosomiasis transmission risk near human water-contact sites.

Scientists are developing a way to counter ulcerative colitis

Researchers conducted the world's first international study to compare two new drugs for treating ulcerative colitis. The results published in The New England Journal of Medicine show Vedolizumab as 9-12% more effective than Adalimumab in treating moderate to severe forms of the disease.

Which came first: Brain size or drinking propensity?

New research challenges traditional idea about relationship between alcohol use and brain size, suggesting that reduced brain volume may represent a genetically-conferred predispositional risk factor for heavier alcohol consumption. Longitudinal and family data from three independent brain imaging studies confirm this association.

Chicks born with ability to distinguish and avoid different dangers

A study by Queen Mary University of London and University of Trento reveals that chicks are born with the knowledge to flee from predators and slow down when a threat is far away. This innate ability allows them to survive in their environment without needing to learn through experience.

DJI Air 3 (RC-N2)

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Genetics reveal Pacific subspecies of fin whale

Scientists have identified a new subspecies of fin whale in the northern Pacific Ocean using genetic research, highlighting the diversity of marine mammals. The finding reveals that fin whales have been separated for hundreds of thousands of years and can be assigned to their ocean of origin using genetic data.

Compact depth sensor inspired by spiders

Researchers developed a compact depth sensor inspired by jumping spiders' impressive depth perception. The metalens sensor combines with an ultra-efficient algorithm to measure depth in a single shot, enabling applications in microrobots, small wearable devices, and virtual/augmented reality headsets.

An overlooked piece of the solar dynamo puzzle

Scientists at Helmholtz-Zentrum Dresden-Rossendorf have identified a new form of magnetic instability in the Sun's rotating plasma, which may contribute to its magnetic field generation. This discovery could be a significant step forward in understanding sunspots and their cycles.

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Study tracks evolutionary history of metabolic networks

The study analyzed how enzymes work and reconstructed the evolutionary history of metabolic networks, showing they became less random and more organized over time. The researchers created a database called MANET, which revealed that early metabolic pathways were more random and less efficient than present-day ones.

The homeland of modern humans

The study reveals that anatomically modern humans (Homo sapiens sapiens) first appeared in a southern African homeland and thrived there for 70,000 years. The researchers used mitochondrial DNA to reconstruct the earliest human population history, suggesting that climate changes triggered early migrations.

Great Barrier Reef island coral decline

A long-term study found significant declines in live, hard corals on Great Barrier Reef island groups, with temperature stress and wave exposure identified as key drivers. The research highlights the importance of addressing water quality and climate change to prevent ecosystem collapse.

Soft drinks found to be the crucial link between obesity and tooth wear

A study from King's College London found that sugary soft drinks are associated with both obesity and tooth wear among adults. The acidic nature of these drinks leads to tooth erosion, particularly in obese patients. This highlights the importance of monitoring calorie intake through acidic sugar-sweetened drinks.

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AAP recommends greater access to surgical treatments for severe obesity

The American Academy of Pediatrics recommends increased access to metabolic and bariatric surgery for children and adolescents with severe obesity, citing the growing public health crisis. Studies show that surgery is safe and effective, but underutilized due to barriers such as insurance coverage and limited centers.

Tuberculous infection is not life-long in most people

Researchers from Penn-led study suggest that tuberculous infection is rarely life-long and that 90% of infected people will not develop active TB. The study found that immunological memory to the disease can outlast elimination of infection, making it difficult to detect those at risk.

IKBFU researchers have discovered another natural antioxidant -- alder bark

IKBFU researchers have found that alder bark extracts contain high levels of polyphenols and antiradical activity, offering potential benefits for anti-aging and disease prevention. The study also reveals the presence of oregonin, a diarylheptanoid glycoside with anti-inflammatory and antimycotic properties.

Fluke 87V Industrial Digital Multimeter

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MIT engineers develop a new way to remove carbon dioxide from air

A new system can capture carbon dioxide from the air at any concentration level, including 400 parts per million, and release it into a carrier stream. This technology has significant implications for reducing greenhouse gas emissions and could eliminate the need for fossil fuels in applications such as soft-drink bottling plants.

Can solar technology kill cancer cells?

Researchers at Michigan State University have developed a new approach to detect and attack cancer cells using light-activated fluorescent dyes. The breakthrough utilizes technology traditionally reserved for solar power, offering promising results in breast, lung, and skin cancer cell lines and mouse models.

Sky & Telescope Pocket Sky Atlas, 2nd Edition

Sky & Telescope Pocket Sky Atlas, 2nd Edition is a durable star atlas for planning sessions, identifying targets, and teaching celestial navigation.

Placing another piece in the dark matter puzzle

Researchers at Johannes Gutenberg University Mainz used a novel nuclear magnetic resonance technique called ZULF to search for dark matter. They found no evidence of ultralight dark matter particles with couplings above a particular threshold, ruling them out as possible candidates.

What 26,000 books reveal when it comes to learning language

A UB researcher's study using 26,000 books suggests that the learning environment plays a significant role in shaping language behavior. The researchers analyzed data from 10 different studies involving over 1,000 participants and found that culture-specific books explained much of the variance in the data.

Sony Alpha a7 IV (Body Only)

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Electrospun fibers weave new medical innovations

Electrospun fibers are being explored as a novel method for creating effective contraceptives and treating brain tumors. A University of Cincinnati study discovered that coaxial electrospinning can combine different materials to improve drug delivery and effectiveness.

Only half of US children get enough sleep during the week

Research found that only 48% of school-age US children get sufficient sleep, leading to improved learning outcomes and childhood flourishing. Children who get enough sleep show increased interest in learning, do required homework, and demonstrate positive behavioral traits.

Did an extraterrestrial impact trigger the extinction of ice-age animals?

A study published in Scientific Reports suggests an asteroid or comet hit Earth 12,800 years ago, causing a period of extreme cooling and contributing to the extinctions of over 35 species of megafauna. The impact hypothesis is supported by platinum spikes found at research sites worldwide, including South Carolina, Europe, and Chile.

Nikon Monarch 5 8x42 Binoculars

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Mentally ill die many years earlier than others

A nationwide study in Denmark found that people with mental disorders die 10-7 years earlier than the general population. The study, published in The Lancet, explores mortality rates for different types of mental disorders, including depression and anxiety.

Antibiotics not necessary for most toothaches, according to new ADA guideline

The American Dental Association recommends against prescribing antibiotics for healthy adults with toothaches, citing evidence that they do not alleviate symptoms and can cause harm. In cases where dental treatment is delayed or signs of infection are present, antibiotics may be considered, but only in specific scenarios.

New study on early human fire acquisition squelches debate

Researchers discovered evidence of controlled fire in Lusakert Cave 1, contradicting the long-held notion that Homo sapiens were the first to master fire. The team used archaeological, hydrocarbon, and isotope analysis to determine the age of fire control among early humans.

Memory training builds upon strategy use

Researchers found that working memory training relies on task-specific strategies to improve performance, rather than increasing capacity. Hundreds of commercial programs claim to boost memory, but their effects are limited to similar tasks.

Kestrel 3000 Pocket Weather Meter

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Hydrogen boride nanosheets: A promising material for hydrogen carrier

Researchers have discovered that hydrogen boride nanosheets can store and release significant amounts of hydrogen under ultraviolet light, making them a promising material for hydrogen carriers. The discovery reinforces the view that these nanosheets could go beyond graphene as a multifunctional material.

Energy regulation rollbacks threaten progress against harmful ozone

A new study by Georgia Institute of Technology researchers warns that rollbacks of US energy regulations could lead to increased CO2 emissions, slowed progress in reducing pollutants, and worsening air quality. This could result in higher costs for healthcare and finances due to increased cases of respiratory illness.

Davis Instruments Vantage Pro2 Weather Station

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Study finds youth suicide rates rise with community poverty levels

Research suggests that counties with high poverty levels have a 37% higher rate of child suicides compared to the least impoverished counties. The association is particularly pronounced for firearm suicides. To address this issue, experts recommend safe gun storage and open communication with children about mental health and suicide.

Not all hypertension drugs are created equal, reports big-data study

A Yale-coauthored paper in Lancet analyzed data from 4.9 million patients to compare the safety and effectiveness of five classes of first-line hypertension medications. Thiazide or thiazide-like diuretics were found to be better at preventing heart attack, heart failure, and stroke than ACE inhibitors.

Researchers uncover novel amyloidosis

Researchers at Tokyo University of Agriculture and Technology have discovered a novel amyloid protein, lipopolysaccharide binding protein (LBP), that induces amyloidosis in rats. This finding is significant as it may provide insights into the development of human amyloidosis and serve as a disease model for studying this condition.

NASA-NOAA satellite shows wind shear affecting a changing Typhoon Bualoi

Typhoon Bualoi continued to exhibit asymmetric shape due to ongoing wind shear, as revealed by NASA-NOAA's Suomi NPP satellite. The storm was transitioning into an extra-tropical cyclone, losing its tropical characteristics. Forecasters predict it will weaken and make landfall well east of Japan.

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Game changer: New chemical keeps plants plump

A UC Riverside-led team has developed a chemical to help plants retain water, reducing crop losses from drought. The new compound, Opabactin, is more effective than earlier versions and works quickly, allowing farmers to manage crop performance.

Fighting the herpes virus

A team of researchers used single-cell RNA sequencing to understand herpes simplex virus type 1 (HSV-1) infections. They found that the NRF2 transcription factor slows infection progression and identified a drug, bardoxolone methyl, that inhibits HSV-1 by activating this factor.

Apple MacBook Pro 14-inch (M4 Pro)

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