749,460 articles

Couples who receive government assistance report less marital satisfaction, commitment, study finds

According to a new study from the University of Missouri, low-income couples who receive government assistance, such as Medicaid or Food Stamps, are significantly less satisfied and committed in their marriages. In the study, couples with low incomes (less than $20,000 per year) scored significantly lower on five of the six dimensions of marital quality: overall satisfaction, commitment, divorce...

Death tolls spur pro-war stance, study finds

Mounting casualities in America's nearly 10-year-old wars in Iraq and Afghanistan might seem to serve as a catalyst for people to denounce the war and demand a way out. But a Washington University in St. Louis study into the psychology of "sunk-costs" finds that highlighting casualties before asking for opinions on these wars actually sways people toward a more pro-war attitude. This sunk-cost...

Deep-sea fish in deep trouble

A team of leading marine scientists from around the world is recommending an end to most commercial fishing in the deep sea. Instead, they recommend fishing in more productive waters nearer to consumers. "Deep-sea fisheries are in deep trouble almost everywhere we look. Governments shouldn't be wasting taxpayers' money by keeping unsustainable fisheries afloat," says Dr. Elliott A. Norse,...

Endangered horse has ancient origins and high genetic diversity, new study finds

An endangered species, Przewalski's horse, is much more distantly related to the domestic horse and has a much more diverse gene pool than researchers previously had hypothesized, researchers report. The new study's findings could be used to inform conservation efforts to save the endangered species, of which only 2,000 individuals remain in parts of China and Mongolia, and in wildlife reserves in...

Evidence for a persistently iron-rich ocean changes views on Earth’s early history

University of California, Riverside researchers report that the ancient deep ocean was not only devoid of oxygen but also rich in iron, a key biological nutrient, for nearly a billion years longer than previously thought--right through a key evolutionary interval that culminated in the first rise of animals. "We will need to rethink all of our models for how life-essential nutrients were...

Evolution's past is modern human's present

That seems to be the takeaway from new research that concludes "archaic" humans, somewhere in Africa during the last 20-60 thousand years, interbred with anatomically modern humans and transferred small amounts of genetic material to their offspring who are alive today. University of Arizona geneticist Michael Hammer and a team of evolutionary biologists, geneticists and mathematicians report the...

Inflammatory mediator enhances plaque formation in Alzheimer’s disease

Alzheimer's disease (AD) is a devastating neurodegenerative disorder that causes progressive cognitive impairment and memory loss. Now, a new study published by Cell Press in the September 8 issue of the journal Neuron identifies a previously unrecognized link between neuroinflammation and the classical pathological brain changes that are the hallmark of the disease. In addition, the research...

Innovative superconductor fibers carry 40 times more electricity

Dr. Boaz Almog and Mishael Azoulay of Tel Aviv University have developed superconducting wires made of single sapphire crystals that can be used in high-powered cables. They take up much less space and conduct energy far more efficiently than current superconductor technologies -- and have the potential to revolutionize energy transfer.

Intensive medical therapy more effective than stenting for preventing a second stroke

Patients at a high risk for a second stroke who received intensive medical treatment had fewer strokes and deaths than patients who received a brain stent in addition to the medical treatment, a large nationwide clinical trial has shown. The investigators published the results in today's online first edition of the New England Journal of Medicine. The National Institute of Neurological Disorders...

Intoxication important in determining when some men commit sexual aggression

A new review article published in the journal Drug and Alcohol Review assesses the extent to which alcohol plays a causal role in sexual assault perpetration. Results found that men who are already prone to anger, who have hostile attitudes toward women, and who are in social environments that accept sexual aggression are most likely to engage in sexual aggression when intoxicated.

King crabs threaten seafloor life near Antarctica

King crabs and other crushing predators are thought to have been absent from cold Antarctic shelf waters for millions of years. Scientists speculate that the long absence of crushing predators has allowed the evolution of a unique Antarctic seafloor fauna with little resistance to predatory crabs. A recent study indicates that one species of king crab has moved 120 km across the continental shelf...

Lee's remnants continue to drench the Eastern US

Remnants from Tropical Storm Lee's clouds remain painfully out of reach of Texas, that needs the rain to battle several wildfires. One NASA satellite image showed how close but how far that needed rain was from the Lone Star State, while another showed the extent of Lee's cloud cover merged with a front.

Liquor store density linked to youth homicides

Violent crime could be reduced significantly if policymakers at the local level limit the number of neighborhood liquor stores and ban the sale of single-serve containers of alcoholic beverages, according to separate studies led by University of California, Riverside researchers. Results of the groundbreaking studies appear in the September issue of the journal Drug and Alcohol Review.

Medical management alone may be best treatment course for stroke prevention

Patients with narrowed arteries in the brain who received intensive medical treatment had fewer strokes and deaths than patients who received a brain stent in addition to medical treatment, according to the initial results from the first, nationwide stroke prevention trial to compare the two treatment options. The results of the National Institutes of Health (NIH) study called Stenting versus...