Researchers used a new atmospheric model to quantify man-made and natural influences on the stratosphere's cooling trend over the past 25 years. The study suggests that increasing greenhouse gases will likely cool the stratosphere in the next century, with important implications for ozone hole recovery.
Researchers have successfully created living taste cells in a lab culture, opening new avenues for understanding the sense of taste and potentially treating disorders. The breakthrough could lead to new insights into how basal cells turn into functional taste cells.
Research reveals a homing mechanism for bone marrow-derived progenitor cell recruitment to neovasculature. This process is crucial in cancer progression as it enables tumors to acquire new blood vessels.
A recent study using high-resolution stable-isotope analysis from 95-million-year-old fossilized wood found that the mid-Cretaceous period was not a super-greenhouse, but rather had a short-lived glaciation. This new information may help us understand how the biosphere will respond to human-generated alterations of CO2 concentration.
Dr. Jeremy Richards proposes setting uniform royalty rates for metal producers to account for extraction costs, which could lead to increased revenue for governments and reduced environmental impact. He also envisions a system of product ownership and recycling to promote social equity and sustainable development.
Two research papers, 'Characterization of the 1918 influenza virus polymerase genes' and 'Characterization of the reconstructed 1918 Spanish influenza pandemic virus', win Lancet's Paper of The Year 2005. The studies provide crucial insights into the 1918 pandemic, which is believed to have killed up to 50 million people.
Researchers at Boston University found that X-ray bursts from the Sun cause dramatic alterations to Mars' ionosphere, as detected by NASA's MGS spacecraft. The team used measurements on Earth to confirm the findings and gain a better understanding of the phenomenon.
Research found that students who scored in the top .01 percentile of their age group on the SAT before age 13 were more likely to achieve a MD degree, earn over $100k annually, or secure a tenure-track position at a top-50 institution. Both groups reported high life satisfaction despite income and tenure differences.
A recent study by Dr. Elizabeth Krall Kaye found that cigarette smokers are 70% more likely to need root canal treatment than nonsmokers. Quitting smoking is linked to a lower risk of needing the procedure.
The Broad Institute will be a pivotal hub for integrative biomedical research, bringing together researchers and biologists in one place. The institute will support the development of novel platforms in imaging, bioengineering, and nanotechnology for stem cell research.
After two months of tweaking, FUSE's control system resumed operations at an efficiency comparable to earlier in the mission. The satellite has obtained significant science data on various celestial objects, including discovering a hot gas halo around the Milky Way galaxy.
Brazil's juvenile detention system remains grossly deficient 15 years after adopting a progressive law reflecting the UN Convention on the Rights of the Child. Overcrowded and unhygienic conditions spread diseases like scabies, while lack of oversight allows cruel treatment to continue.
The report suggests that management practices and job design can influence worker health in the poultry industry. Recommendations include building a culture of safety with worker advocacy groups and creating 'safety committees' to give workers more control over their work environment.
Researchers at the University of Rochester Medical Center have developed a fast-working biosensor that can detect infectious agents in minutes, not days. The technology uses a silicon chip and digital camera to analyze changes in surface patterns when target bacteria are present.
A new PSA campaign about risky sexual behaviors has shown positive results, with parents more likely to discuss these issues with their children after seeing the ads. The campaign, funded by the Adolescent Pregnancy Prevent Coalition of North Carolina, aimed to reduce teen pregnancy rates in the state.
Research on hurricane Katrina victims reveals a correlation between self-reported pain, stress, and fear. The study also found that patients demonstrated resilience in coping with chronic pain after the disaster, focusing on survival rather than pain.
Research suggests a connection between periodontal disease and atherosclerosis, which may be driven by bacteria from gum infections entering the bloodstream. This study emphasizes the importance of managing both oral health and cardiovascular risk factors to reduce overall disease risk.
Scientists have identified two blood clotting genes associated with an increased risk of coronary disease, finding that genetic variants of factor V and prothrombin increase thrombin production. The study suggests the need for bigger studies to identify other genetic causes of heart attacks.
Researchers at Princeton University developed a new modeling technique that can predict and negate the noise produced by air flowing across a car's sunroof. The technique uses computer simulations to manipulate the air flow and cancel out the acoustic waves, resulting in a quieter aircraft. This innovation has important military applic...
A study provides empirical support for natural selection's role in species formation by analyzing the relationship between adaptation and reproductive isolation in hundreds of organisms. The researchers found a positive link between these two processes, suggesting that adaptation drives species diversification.
Researchers develop a new mathematical framework to understand sound processing and find that the brain's signal coding is highly optimized for natural sounds. This breakthrough could lead to improved signal processing for compressed digital audio files and more efficient cochlear implants.
In cluttered conditions, observers make more high-confidence errors due to increased background noise and reduced accuracy. The study's findings suggest far-reaching implications for complex cognitive tasks, including problem-solving and memory.
Researchers found that Crohn's disease patients produce lower quantities of neutrophils and inflammatory mediators in response to trauma, leading to delayed blood flow and persistence of bacteria. Treatment with Viagra corrected abnormally low blood flow, suggesting a potential role for the drug in treating the disease.
A recent study published in Nicotine and Tobacco Research found a significant link between genetic variations in the PTC gene and smoking behavior. Smokers with reduced bitterness sensitivity were more likely to smoke for taste, while those with a specific less common genetic variant were 20% less likely to smoke.
Researchers found that Ginkgo biloba extract significantly slowed the growth of aggressive breast tumors in mice by 80 percent, while also reducing brain tumor size. The study suggests that Ginkgo biloba may have preventive effects on invasive cancers and is being explored as a potential treatment for Alzheimer's disease.
A network of multidisciplinary centers will collaborate to study the origins of idiopathic pulmonary arterial hypertension (IPAH). Researchers aim to identify new molecular and genetic markers for the disease and develop targeted therapies.
Physicists at Max Planck have measured the lifetime of positronium ions six times more precisely than before, finding an average lifespan of almost half a nanosecond. This closely matches predicted values and provides an interesting model system for quantum mechanics.
Researchers found that a protein called alpha4-beta1 integrin promotes the homing of bone marrow-derived progenitor cells to tumor-associated blood vessels. Inhibiting this process could be useful in suppressing new blood vessel formation in tumors.
The new microscope enables crystallographic information to be measured at a lateral resolution of about 40 cubic nanometres, and depending on the material, even more finely. Researchers have already used it to study steel-related iron-aluminium intermetallic alloys, which show promise for high-temperature gas turbines.
Researchers have designed a technique to steer the evolution of enzymes towards desired outcomes, creating specific products. The technique uses mathematical models and site-directed mutagenesis to rapidly evolve promiscuous enzymes into specialized ones.
A special strain of soil bacterium Pseudomonas putida converts polystyrene foam into a biodegradable plastic called PHA, which can be used in medicine and disposable items. The process might also be used to convert other types of discarded plastics into PHA, reducing plastic waste.
A recent study found that television advertisements were the most helpful in the quitting process, reaching and assisting over 30% of smokers. Emotionally arousing ads featuring smoking-related illnesses or inspirational quit tips were deemed most effective by quitters.
Researchers suggest that seafood can play a role in reducing coronary heart disease, Alzheimer's, and other mental illnesses. Seafood is rich in omega-3 fatty acids like DHA, which support cognitive development and brain health. However, more research is needed to fully understand the risks and benefits of seafood consumption.
Astronomers have confirmed the presence of two new moons around Pluto, provisionally designated S/2005 P 1 and S/2005 P 2. The new discoveries were made possible by the exceptional resolution of the Hubble Space Telescope, which revealed the small moons' orbits with similarities to Charon's.
A Stanford scientist argues that persistent bacterial infections may provide beneficial effects on the host, such as protection against certain cancers. The researcher notes that many organisms cause disease but often remain asymptomatic, and that messing with microbes can lead to unforeseen consequences.
The use of animal serum-free media for growing live cells is being promoted as a more humane and scientifically superior alternative. This approach eliminates the need for fetal calf serum, reducing variables in experiments and ensuring reproducibility across laboratories.
A new study shows that seasonal intermittent preventive treatment significantly reduces malaria episodes in children under five, with an 86% decrease observed. The treatment, which involves giving antimalarial medication at defined times without prior testing, has the potential to save millions of lives in Africa.
A study of 79 patients found that renewed methotrexate treatment was effective in 53.2% of patients who had previously failed the drug. Lower initial doses were more likely to be successful than higher doses.
A new computational model developed by Dr. Moshe Wald helps physicians plan the best approach for IVF/ICSI treatments for couples. The model considers various factors, including a woman's age, man's infertility issues, and sperm retrieval methods.
Researchers seek to confirm that deep brain stimulation can help patients with severe obsessive-compulsive disorder (OCD) and understand the disrupted brain network. A clinical study will examine the effects of DBS at different sites and assess treatment effectiveness.