Scientists have developed a new method to study sprites, the high-altitude companions of lightning strikes, using radio signals. By analyzing these signals, researchers can now estimate the number of sprites spawned by a single thunderstorm with greater accuracy.
A new study published in the American Journal of Clinical Nutrition suggests that lifelong dietary intakes of potassium, magnesium and fruit and vegetables are determinants of bone mineral density in elderly men and women. Eating fruits and vegetables can help prevent osteoporosis by neutralizing acidity and maintaining bone health.
A study published in Injury Prevention reveals that pediatricians can curb violent behavior during well-child examinations by educating families about youth violence, counseling children directly, and advocating for gun safety. The study also highlights the importance of community resources and supports parents' discipline practices.
Researchers Joel Berger and Steven Cain found that the length of bison birthing periods is not longer in brucellosis-exposed populations. This allows ranchers to predict when it's safe to put cattle on public lands where bison live, typically delaying until July.
The caiman harvesting program in Venezuela, which began in 1983, has harvested over a million spectacled caimans, generating $115 million in export value. However, the program's direct link to conservation is threatened by changes to funding allocations and market instability.
Sandia National Laboratories' tiny acoustic wave sensors can detect specific chemicals in the environment and alert people to potential hazards. The sensors, similar to a 'canary in a mine,' are part of a hand-held chemical detection system called 'chem lab on a chip.'
Scientists discovered that p-glycoprotein and a similar protein collaborate to limit drug traffic through the brain. This finding could lead to improved treatment of diseases like AIDS, depression, cancer, and more.
Researchers at UNC Chapel Hill have discovered a novel cancer gene therapy strategy that blocks NF-kappa B, a protein that enables many cultured tumor cells to escape death. The technique showed promising results in mice with human tumors, shrinking and eliminating tumors in some cases.
A new human gene has been identified as potentially playing a key role in regulating high-density lipoprotein (HDL) levels in the body. The gene's overexpression in mice led to nearly undetectable HDL levels, a condition associated with high cardiovascular disease risk.
Behavioral factors can contribute to extinction, such as electrocution from roosting on electric wires or flying into lights. Biologists are using decoys and mimicry to reestablish colonies and attract species.
A recent study found that women with impaired hearing had lower blood levels of vitamin B-12 and folate compared to those with normal hearing. The researchers suggest that dietary recommendations aimed at influencing the course of age-related hearing loss may be possible, but more advanced studies are needed.
Researchers found distinct brain activity patterns in introverts and extroverts using PET scans. Introverts exhibit more internal processing, while extroverts show increased sensory processing.
Aging hamsters who received a new biological clock had their lifespan increased by 20%, proving the importance of circadian rhythms to health and longevity. Behavioural modifications, such as structured light-dark cycles, may achieve similar benefits in humans.
A new University of Delaware theory explains how good insect moms fiercely protect their young by fanning their wings and charging predators when all hopes are on a single batch of eggs. The semelparous insects, which lay a single clutch, defend their only genetic legacy to the death.
A recent study found that low-level inflammation in adults is connected to measures of insulin metabolism. The loss of sensitivity to insulin contributes to diabetes, which in turn is a major cause of heart disease. High levels of C-reactive protein indicate low-level inflammatory status and are associated with increased risk of cardio...
A new neuroactive chemical, HF-7, isolated from spider venom may block overproduction of neurotransmitters causing brain damage after oxygen deprivation. Theoretical studies suggest HF-7 could stave off severe brain damage during short bouts of oxygen loss.
Researchers at Cornell University are studying turbulent flows by releasing tiny polystyrene spheres into a water flow, tracking their movement through a laser beam. The goal is to gain a fundamental understanding of turbulence, which could lead to practical applications in weather modeling and fuel efficiency.
Researchers have engineered E. coli bacteria to scavenge heavy metals like mercury, cadmium, zinc, nickel, or manganese from very dilute solutions, reducing contamination to the lowest detectable level
A recycling plan devised by Cornell University students aims to save restaurant scraps from landfills and send them to compost piles, boosting community greenhouse-gardens. Seven restaurants have expressed interest in composting their food scraps, and a pilot study is underway.
A Cornell University chemist has developed a zinc-based catalyst to produce polycarbonates, a class of materials with potential as biodegradable materials. The breakthrough could lead to more economical and commercial possibilities for producing plastics from CO2.
A new cleanup system called Anodic Fenton Treatment (AFT) can clean up waste water from pesticides and textile processing on-site in just two to three minutes. The AFT process uses two electrochemical half-cells to produce hydroxyl radicals that break down unwanted chemicals, producing safe water for disposal.
Researchers found that measuring LDLc levels before menopause is a more reliable indicator of heart disease risk than tracking changes after menopause. Effective therapies include diet, exercise, and medication can substantially reduce the risk of heart attacks and strokes among women.
A new screening tool combining CT scans and electrocardiograms has promise to be a highly effective and relatively inexpensive way to detect blood vessel disease. The test measures calcium in the heart's arteries, identifying signs of atherosclerosis that can block arteries and cause heart attacks and strokes.
A University of Pittsburgh team used electron beam computed tomography and carotid ultrasounds to assess heart disease in living people. They found that pre-menopausal risk factors such as smoking and low-density cholesterol strongly predict the development of coronary artery disease after menopause.
A 10-year study found that parenthood led to reduced leisure time physical activities in women, with a greater decrease observed among white women. The study suggests that mothers may need more time to exercise or design programs allowing them to exercise with their children present.
A study of 54 postmenopausal women found that a higher intake of vitamin E from food was linked to reduced oxidation of LDL cholesterol, a key indicator of heart disease. This benefit occurred only in women who did not use supplements.
Researchers have made significant discoveries in various fields, including a new form of Ritalin that could treat cocaine addiction, a bone growth pill, and wrinkle-free cotton. Additionally, citrus limonoids show anticancer potential and can control insects, while polymers may aid in aircraft fire safety.
Researchers at Clemson University are developing practical and cost-effective solutions to create tornado 'safe rooms' in homes. They're testing various structural components, including wood-reinforced panels and metal decking, to prevent damage from wind-blown debris and falling trees.
Scientists discovered a common viral harpoon protein structure among measles, mumps and respiratory syncytial viruses. This finding suggests that these viruses may be related to HIV, influenza and Ebola viruses, potentially leading to the development of new drugs.
Researchers at Northwestern University discovered a common ancestor among viruses that cause measles, mumps, and respiratory infections in infants and HIV, influenza, and Ebola. The study found a similar entry mechanism among these viruses, suggesting new approaches to blocking infection.
Researchers found that a one-nanometer decrease in low-density lipoprotein (LDL) particle size is associated with a significant increase in heart disease risk, ranging from 30 to 230 percent, depending on the population studied. The study analyzed data from three different groups and controlled for various factors.
The American Heart Association reports that higher levels of physical activity are associated with lower risk of cardiovascular disease and reduced inflammation. Additionally, researchers found that smaller LDL particles are an independent risk factor for heart disease.
New research suggests that the Southeastern US experienced a warm and wet climate during the Middle Holocene Period, contrary to previous theories. Fossil pollen data and paleochannels indicate intensified flooding and increased wetland plants, while a lack of windblown sand supports this finding.
USGS scientists will present research on rare plants, including soft-leaved Indian paintbrush and island jepsonia, and the effects of invasive species like feral pigs. The symposium aims to inform conservation strategies for California Channel Islands National Park.
Researchers reveal that the Type III TGF-beta receptor plays a crucial role in transforming heart cells and forming valves, providing new insights into congenital heart defects. The discovery could lead to improved treatments for children with heart defects.
Researchers use telescopes and computer simulations to understand gamma-ray burst explosions. They find evidence of shock waves generated by collisions between material flowing out at different velocities, potentially revealing the cause of initial visible light emission.
Researchers at the University of Pittsburgh found that HbA1 levels predict mortality from coronary artery disease in women with Type 1 diabetes. However, this association was not seen in men with the same condition. The study analyzed data from over 600 subjects and suggests a gender-specific link between hyperglycemia and CAD risk.
A dense brownish haze layer extended from the ocean surface to 1-3 km altitude, impacting climate processes over the northern Indian Ocean. The haze reduced solar radiation absorbed by the ocean surface by as much as 10%, altering weather and climate dynamics.
Researchers have found that butyltins can disrupt the function of human natural killer cells, which are critical in fighting tumor cells and infected cells. The study's findings highlight the need for further research into the potential health effects of these chemical contaminants on humans.
The American Heart Association reports that high dietary salt intake is linked to increased risk of heart disease and stroke in overweight individuals. Snoring may also be a warning sign for cardiovascular disease, as it activates the sympathetic nervous system. Additionally, controlling weight through exercise can reduce cardiovascula...
A study found that patients who experience strokes during the night wait four to seven hours longer for emergency treatment than those whose strokes occur during the day. This delay is caused by the difficulty in determining the exact time of stroke onset when symptoms are only apparent after waking up.
Recent experiments by physicists at the University of Notre Dame and Tohoku University have found that current theories describing turbulence may need modifications, particularly in extreme situations. The findings suggest that ultra-hard turbulence, a predicted state of turbulent flow, may not exist as previously thought.
A new study from Boston University suggests that moderate alcohol consumption up to 20 grams/day may not raise PAI-1 levels; instead, higher levels are associated with a modest increase. The findings suggest that moderate drinking may have beneficial effects on PAI-1 or at least no harm.
The American Heart Association recommends statin drugs as a second step after lifestyle modifications for cholesterol-lowering. Red yeast rice, found in Cholestin, may be less safe and effective than prescription medications.
Researchers at CalTech designed a new protein-like polymer that supports endothelial cell growth and could be used for blood vessel replacement. The material is expected to aid patients who cannot supply their own replacement veins, offering a potentially improved success rate compared to current synthetic polymers.
Scientists warn that Arctic climate change could counteract ozone layer recovery efforts. Particle sedimentation processes in the stratosphere may remove protective gases, hindering the healing of the ozone layer over the northern polar region.
A new instrument helps children understand the difference between truth and lies, and recognize the importance of telling the whole truth. The Lyon-Saywitz Oath-Taking Competency Picture Task has shown that children as young as five can be trusted to understand what they're promising in a court of law.
A Chinese condiment extract, Cholestin, has been shown to reduce total blood cholesterol by nearly 26% in elderly patients and 'bad' cholesterol by 32.8%. The supplement contains HMG-CoA reductase inhibitors that inhibit liver-produced cholesterol production.
Research presents evidence that moderate caffeine consumption can improve performance in tasks requiring sustained attention. Additionally, studies suggest that green tea catechins have anti-oxidative, antibacterial, and antiviral potency, while polyphenolic compounds in cocoa may also have cardiovascular benefits.
Researchers at the University of Pittsburgh have found that electron beam computed tomography (EBCT) can identify older adults with heart disease who appear healthy through standard non-invasive tests. EBCT measures coronary and aortic calcification, which are known risk factors for coronary events.
A NASA study led by Dr. Dale Quattrochi found that Atlanta's urban expansion creates a unique heat island effect, influencing local weather patterns and air quality. The study revealed that this phenomenon can lead to increased ozone production and thunderstorms due to the interaction between warm air and surrounding areas.
Researchers at Cornell University are working on an artificial gel made of silicon that could lead to faster and cheaper methods for DNA sequencing. The biochip is designed to identify DNA fragments by measuring their movement through uniform-sized passages, allowing for more precise control and comparison with theoretical predictions.
New studies suggest ecosystems can be disrupted by small environmental changes or loss of minor species, challenging conventional wisdom on ecological protection. Research finds importance of both keystone and lesser species in ecosystem function.
A study found that low educational level increases the risk of congestive heart failure by 35% compared to those with more education. The strongest risk factors for developing CHF were diabetes, high blood pressure, overweight, smoking, and physical inactivity.
Astronomers have detected the brightest optical celestial object ever recorded using a low-cost, automated telescope built from recycled lenses and hardware. The ROTSE-1 telescope captured optical emissions from a gamma ray burst while it was still arriving, providing new insights into the phenomenon.
Researchers at Virginia Tech are using molecular modeling to help chemistry students better understand molecules and their properties. Students explore specific molecules on the computer before making actual compounds in the lab, resulting in improved student engagement and outcomes.
Scientists are using an old photographic technique to study nuclear physics and potentially develop a clean, long-term power source through thermonuclear fusion. The petawatt laser facility generates high-energy gamma rays that can be used to trigger tiny fusion reactions.
Researchers have discovered a new polymer that produces water vapor and leaves a nearly nonflammable residue when heated, making it more fire-resistant than current materials. The study's findings could help prevent deaths in survivable airplane accidents, which account for 40% of fatalities.
A new study reveals that a specific gene variant can make African Americans more sensitive to salt, increasing their risk of developing high blood pressure. The researchers found that even small amounts of salt can raise blood pressure in individuals with the gene variant.
Ground-penetrating radar is used to map large areas and determine snowfall patterns, providing a record for comparison with climate models. The technology can accurately date ice layers, which is essential for studying glacial cycles and changes in atmospheric chemistry.