University of Michigan researchers found that invasive cattails alter the environment in ways that hinder native species but benefit the invaders. The cattails' litter accumulation creates a different environment with higher nutrient levels and lower light, which favors the invaders' growth.
A new analysis of ocean-floor sediments collected near the North Pole reveals that the Arctic was extremely warm, unusually wet, and ice-free during a prehistoric period 55 million years ago. The findings suggest that massive amounts of greenhouse gases were released into the Earth's atmosphere during this time.
Researchers are investigating antioxidants for preventing or treating rickettsia bacteria, a deadly tick-borne illness. The study, funded by the National Institute of Allergy and Infectious Disease, aims to identify novel therapeutic targets for rickettsial diseases.
A new species of hoofed mammal, Hemihegetotherium trilobus, has been discovered in Bolivia with distinctive three-lobed lower molar teeth. The animal is believed to have lived around 13 million years ago and was part of the notoungulate group, which dominated South America before its extinction.
Research reveals that young people who use condoms often apply them too late or remove them too soon, increasing the risk of unwanted pregnancy and sexually transmitted infections. Those with a close relationship with their mothers are more likely to use condoms correctly.
Researchers found that taking Lipitor reduced the risk of secondary stroke by 16% and major coronary events by 35%. The study suggests that initiating statin treatment shortly after a stroke may be beneficial for patients at high risk.
A pilot research study led by Marina Bers explores how virtual environments can promote positive development in post-transplant adolescents and encourage adherence to treatment protocols. The study uses a three-dimensional virtual world called Zora, where children create and control their own identities and interact with others.
Researchers at Arizona State University's Polytechnic campus conducted a landscaping experiment to examine the impact of environmental surroundings on human behavior. The study found that individuals living in areas with lush landscapes preferred more recreational spaces, while those in desert environments barely knew their neighbors.
A University of Minnesota study found that teens with low body satisfaction are more likely to engage in unhealthy weight control behaviors, such as binge eating and smoking, which can lead to obesity and poor health. In contrast, those with a positive body image tend to prioritize healthy eating and exercise.
A 22-year study by Harvard Medical School found that the prevalence of overweight children increased from 6.3% to 10%, while infants showed a 59% rise in risk and a 74% increase in number of overweight infants. This suggests that efforts to prevent obesity must start early, even before birth.
The Lung Metagene Predictor scans thousands of genes to identify patterns of gene activity in individual tumors, predicting a patient's likelihood of recurrence and recommending chemotherapy accordingly. The test has the potential to save thousands of lives each year by targeting high-risk patients with aggressive treatment.
A gene that enables rice to survive complete submergence has been identified, allowing for development of new rice varieties that can withstand flooding. The discovery is expected to increase food security for 70 million poor people and reduce yield losses from weeds in areas like the United States.
A humanitarian response is required in Lebanon due to the dire situation faced by millions. The lack of access, security, and funding for aid delivery has exacerbated the crisis.
Researchers identified a number of activity patterns in genes that make tumors biologically different, providing valuable information for treatment decisions. Four out of five predictors showed significant agreement in their outcome predictions, indicating potential for personalized treatments.
A new study of twins found that genetic susceptibility to Multiple Sclerosis is significantly increased among those born in the northern environment, with a higher concordance rate among identical twins. Northern residence also contributed to an earlier onset of the disease, suggesting environmental factors play a crucial role.
Experts recommend Arctic nations designate marine protected areas, foster economic adaptation, and reduce greenhouse gas emissions to cope with climate change. Implementing these policies could significantly slow the rates of Arctic change.
A team of scientists has revealed detailed images of embryos over 500 million years old, shedding light on the evolutionary changes of the penis worm. The study uses synchrotron-radiation X-ray tomographic microscopy to reconstruct internal anatomy and reveals unique patterns in embryonic development.
SNAP, a NASA-supported mission, aims to measure the expansion history of the universe and investigate dark energy. Using two independent techniques, it will analyze thousands of Type Ia supernovae and independently probe the growth structure of the universe.
A study found that exposure to similar logos reduces brand-exclusive recall by one-third, on average. Consumers' relative knowledge of the two product categories also impacts retrieval.
Researchers at University of Central Florida have discovered a defense peptide that can effectively block the HIV-1 virus from entering and infecting blood cells. The peptide, retrocyclin, has shown minimal resistance to the virus over 100 days, making it a promising candidate for developing an affordable treatment.
Researchers at Carnegie Mellon University have developed Ballbot, a self-contained mobile robot that balances dynamically on a single sphere, enabling it to move easily among people and furniture. The robot's tall and skinny design allows it to outperform traditional statically stable robots in environments with obstacles.
A five-year study found that taking atorvastatin soon after a stroke can reduce the risk of recurrent stroke by 16 percent in people with no known history of coronary heart disease. The study also showed that atorvastatin reduces the risk of other major coronary events, such as heart attack and cardiovascular events.
A four-year study found chronically high blood sugar associated with increased risk of mild cognitive impairment (MCI) or dementia. Women with elevated glycosylated hemoglobin were four times more likely to develop MCI or dementia than those with lower levels.
A recent study published in Journal of Epidemiology and Community Health found that never-married individuals are 58% more likely to die between 1989 and 1997 compared to their married peers. The 'never married penalty' is higher for those in excellent health, but not among the poor or elderly.
Researchers have uncovered a genetic 'snooze button' that regulates when plants bloom in the spring, allowing them to compete for resources. The study's findings offer hints at precise control over flowering, essential for agriculture and plant reproduction.
Research on over 14,000 hospital patients and 38,000 controls found that workplace violence increases the risk of depression by 45-48% in both men and women. The magnitude of risk is directly proportional to the amount of violence experienced at work.
A large representative survey found that 3.5% of adolescents in the US had ever exchanged sex for drugs or money, with higher rates among African American youths and those from non-traditional family setups. The study also showed a significant link between exchanging sex and drug use, as well as depression and having been forced into sex.
A $2.25 million NIMH-funded study is being conducted at Kent State University to examine the psychological impact of ongoing terrorism on PTSD and depression. The study aims to identify factors that exacerbate mental health issues, such as prior trauma exposure and social support.
Scientists replicated HCV in mouse cells using a gene called protein kinase R, blocking the virus's high rate of replication. This breakthrough may lead to better understanding of why some patients respond to treatment, potentially shedding light on new therapeutic strategies.
A new study from the University of Chicago Press Journals reveals that consumers perceive price hikes differently for material goods and services. Consumers consider fair price increases when costs associated with production or provision increase, but not when service costs and vendor profits are linked.
Research suggests Transcendental Meditation can modify brain function to reduce trait anxiety and stress reactivity, improving outcomes for those with acute and chronic pain. The study's findings have implications for pain management and treatment of conditions like depression and anxiety.
The IODP Arctic Coring Expedition has provided new evidence that the Arctic was extremely warm and ice-free up to 55 million years ago, during the Paleocene/Eocene thermal maximum. This period saw a massive release of greenhouse gases, leading to significant temperature rises and changes in ocean chemistry.
Researchers found strong parallels between consumer complaint websites and civic protest movements, with consumers using rhetorical tactics to address injustice and agency. Consumers targeted companies like American Express and United Airlines, framing their grievances as a cause worthy of public attention.
EMBL scientists have founded a start-up company called Elara Pharmaceuticals GmbH to develop new anti-cancer drugs. The company will take promising small molecule leads from EMBL's Chemical Biology Core Facility and further develop them for evaluation in animal models of various types of cancer.