last updated: Tue, 29 Jul 2014 13:44:26 GMT
One might assume that a tropical storm moving through volcanic smog would sweep up the tainted air and march on, unchanged. However, a recent study from atmospheric scientists revealed that, though microscopic, gasses and particles from Kilauea volcano exerted an influence on Tropical Storm Flossie -- affecting the formation of thunderstorms and lightning in the sizable storm.
New research shows that the whip-like appendages on many types of cells are able to synchronize their movements solely through interactions with the fluid that surrounds them.
When temperatures are extremely high or low, there is a significant increase in the number of deaths caused by heart failure or stroke. This has been confirmed by epidemiological studies.
It seems common practice: After a long day at work, most people sometimes just want to turn on the TV or play a video or computer game to calm down and relax. However, in a new study researchers found that people who were highly stressed after work did not feel relaxed or recovered when they watched TV or played computer or video games. Instead, they tended to show increased levels of guilt and feelings of failure.
A new study shows that while the impact of life’s stressors accumulate overtime and accelerate cellular aging, these negative effects may be reduced by maintaining a healthy diet, exercising and sleeping well.
An international team of scientists has sequenced the genome of African rice. The new information will enable scientists and agriculturalists to develop varieties of rice that can survive in a changing climate.
Norwegian explorer Roald Amundsen became the first man to reach the South Pole in December 1911. More than 100 years later, an international team of scientists has proven that air pollution from industrial activities arrived to the planet's southern pole long before any human. Using data from 16 ice cores, industrial lead contamination was pervasive throughout Antarctica by the late 19th century.
A new stem-cell discovery might one day lead to a more streamlined process for obtaining stem cells, which in turn could be used in the development of replacement tissue for failing body parts, according to scientists.
NASA's Opportunity Mars rover, which landed on the Red Planet in 2004, now holds the off-Earth roving distance record after accruing 25 miles (40 kilometers) of driving. The previous record was held by the Soviet Union's Lunokhod 2 rover.
3-D printers can create all kinds of things, from eyeglasses to implantable medical devices, straight from a computer model and without the need for molds. But for making spacecraft, engineers sometimes need custom parts that traditional manufacturing techniques and standard 3-D printers can't create, because they need to have the properties of multiple metals. Now, researchers at NASA's Jet Propulsion Laboratory in Pasadena, California, are implementing a printing process that transitions from one metal or alloy to another in a single object.
Scientists using mission data from NASA's Cassini spacecraft have identified 101 distinct geysers erupting on Saturn's icy moon Enceladus. Their analysis suggests it is possible for liquid water to reach from the moon's underground sea all the way to its surface.
Fifteen years ago, medical researchers had a novel idea for an HIV drug. They thought if they could induce the virus to mutate uncontrollably, they could force it to weaken and eventually die out -- a strategy that our immune system uses against many viruses.
Researchers have demonstrated how a common mineral acts as a catalysts for specific hydrothermal organic reactions -- negating the need for toxic solvents or expensive reagents.
People with dementia are more likely to get implanted pacemakers for heart rhythm irregularities, such as atrial fibrillation, than people who don't have cognitive difficulties, according to researchers. The researchers noted the finding runs counter to expectations that less aggressive interventions are the norm for patients with the incurable and disabling illness.
An electronic screening tool that starts with a single question to assess the frequency of substance misuse appears to be an easy way to screen teenagers who visited a physician for routine medical care.
Heat stroke is 10 times more likely than cardiac events to be life-threatening for runners during endurance races in warm climates, according to a new study. The authors noted the findings may play a role in the ongoing debate over pre-participation ECG screenings for preventing sudden death in athletes by offering a new perspective on the greatest health risk for runners.
Running for only a few minutes a day or at slow speeds may significantly reduce a person's risk of death from cardiovascular disease compared to someone who does not run, according to a new study.
When you're expecting something -- like the meal you've ordered at a restaurant -- or when something captures your interest, unique electrical rhythms sweep through your brain.
Physicists have identified the 'quantum glue' that underlies a promising type of superconductivity -- a crucial step towards the creation of energy superhighways that conduct electricity without current loss.
The genome of Solanum pennellii, a wild relative of the domestic tomato, has been published by an international group of researchers. The new genome information may help breeders produce tastier, more stress-tolerant tomatoes.
Stimulating the ventral tegmental area, one of two dopamine-producing regions in the brain, was able to arouse animals receiving general anesthesia with either isoflurane or propofol. The same effect did not result from stimulation of the substantia nigra.
Researchers have pinpointed a mechanism in part of the brain that is key to sensing glucose levels in the blood, linking it to both type 1 and type 2 diabetes.
Most cells do not divide unless there is enough oxygen present to support their offspring, but certain cancer cells and other cell types circumvent this rule. Researchers have now identified a mechanism that overrides the cells' warning signals, enabling cancers to continue to divide even without a robust blood supply. In the process, the researchers found that lysosomes -- the cell's protein 'recycling centers' -- help govern cell division decisions.
An evolutionarily ancient and tiny part of the brain tracks expectations about nasty events, according to new research. The study demonstrates for the first time that the human habenula, half the size of a pea, tracks predictions about negative events, like painful electric shocks, suggesting a role in learning from bad experiences.
A new discovery of two additional coral communities showing signs of damage from the Deepwater Horizon oil spill expands the impact footprint of the 2010 spill in the Gulf of Mexico.
A new study from scientists at the University of Miami Rosenstiel School of Marine and Atmospheric Science and colleagues confirms rising levels of water vapor in the upper troposphere -- a key amplifier of global warming -- will intensify climate change impacts over the next decades. The new study is the first to show that increased water vapor concentrations in the atmosphere are a direct result of human activities.
Improved living conditions and less gender-restricted educational opportunities reduce the cognitive disparities between men and women or improve the gap in favor of women, according to new research.
A new study shows that it is possible to accurately predict first impressions using measurements of physical features in everyday images of faces, such as those found on social media.
Cancer researchers have found a molecule that selectively and irreversibly interferes with the activity of a mutated cancer gene common in 30 percent of tumors.
According to the National Highway Traffic and Safety Administration, from 2001 through 2010, 1,368 people died in school transportation-related crashes—an average of 137 fatalities per year.
Research conducted at the Florida campus of The Scripps Research Institute has discovered links between a set of genes known to promote tumor growth and mucoepidermoid carcinoma, an oral cancer that affects the salivary glands.
Biochemists have reported an advance in the production of functional mirror-image proteins. In a new study, they have chemically synthesized a record-length mirror-image protein and used this protein to demonstrate that a cellular chaperone, which helps "fold" large or complex proteins into their functional state, has a previously unappreciated talent -- the ability to fold mirror-image proteins. These findings will greatly facilitate mirror-image protein production for applications in drug discovery and synthetic biology.
Babies can learn what to fear in the first days of life just by smelling the odor of their distressed mothers’, new research suggests. And not just “natural” fears: If a mother experienced something before pregnancy that made her fear something specific, her baby will quickly learn to fear it too -- through her odor when she feels fear.
Researchers have enhanced the antioxidants present in mango fruit drink by adding the extracts of naturally occuring traditional herbs in Malaysia.
Scientists have discovered a new type of cool burning flames that could lead to cleaner, more efficient engines for cars. The discovery was made during a series of experiments on the International Space Station.
A study of juvenile rat brain cells suggests that the effects of a commonly used anesthetic drug on the connections between brain cells are temporary.
As the school year approaches and begins, many parents may start to hear their children complain about headaches.
Mothers who live near green spaces deliver babies with significantly higher birth weights, according to a new study.
Scientists have now identified a simple, pill-only treatment for hepatitis C that can cure 93 percent of patients in 12 weeks. This replaces a long and complicated treatment with many serious side effects.
Eight of the top 10 US cities that have seen an increase in so-called 'nuisance flooding' -- which causes such public inconveniences as frequent road closures, overwhelmed storm drains and compromised infrastructure -- are on the East Coast, according to a new technical report. This nuisance flooding, caused by rising sea levels, has increased on all three US coasts, between 300 and 925 percent since the 1960s.
While the mobile health apps market offers tremendous potential, several health law experts say that more oversight is needed by the US Food and Drug Administration to ensure consumer confidence and safety. Out of 100,000 mHealth apps on the market, only about 100 have been cleared by the FDA, which opponents see as a deterrent to innovation and profit. But it doesn't have to be.
Understanding that diets are often built around food groups rather than specific nutrients, researchers from Switzerland, France, and North America decided to examine interactions between four nutrients found in dairy products and their role in preserving bone and skeletal muscle.
“Fist bumping” transmits significantly fewer bacteria than either handshaking or high-fiving, while still addressing the cultural expectation of hand-to-hand contact between patients and clinicians, according to a new study.
Bioengineers have a designed a peptide structure that can stop the harmful changes of the body's normal proteins into a state that's linked to widespread diseases such as Alzheimer's, Parkinson's, heart disease, Type 2 diabetes and Lou Gehrig's disease.
Researchers have developed a powerful new tool that can help advance the genetic engineering of 'fuel' crops for clean, green and renewable bioenergy -- an assay that enables scientists to identify and characterize the function of nucleotide sugar transporters, critical components in the biosynthesis of plant cell walls.
Scientists are making models for polymer macromolecules using magnets and DNA 'springs' that can be tuned for flexibility.
Following the approval of a sublease on July 25 by the Hawaii Board of Land and Natural Resources, the Thirty Meter Telescope (TMT) announces the beginning of the construction phase on Hawaii Island and around the world throughout the TMT international partnership. Contingent on that decision, the TMT International Observatory (TIO) Board of Directors, the project's new governing body, recently approved the initial phase of construction, with activities near the summit of Mauna Kea scheduled to start later this year.
The magnets cluttering the face of your refrigerator may one day be used as cooling agents, according to a new theory. A magnetically driven refrigerator would require no moving parts, unlike conventional iceboxes that pump fluid through a set of pipes to keep things cool.
The secret to boosting the language skills of preschoolers with disabilities may be to put them in classrooms with typically developing peers, a new study finds.
New research finds that the positive reaction one would have when succeeding is lessened if it doesn't follow the expected course.
A team of researchers has developed a method to automatically identify topics that people search for on Google before subsequent stock market falls.
Thanks to a small, wearable device that can hang on a pair of eyeglasses, a common complication of diabetes may get caught sooner. Researchers have developed a pupillometer that scans the patient's eyes for early signs of diabetic autonomic neuropathy -- a condition that progressively affects the autonomic nerves controlling vital organs. This kind of early detection enables early treatment, leading to far better health outcomes for the patient.
A recent study shows that the emission is dominated by the local hot bubble of gas -- 1 million degrees -- with, at most, 40 percent of emission originating within the solar system. The findings should put to rest the disagreement about the origin of the X-ray emission and confirm the existence of the local hot bubble.
Despite saving thousands of lives yearly, nearly half of organ transplant surgeons report a low sense of personal accomplishment and 40 percent feel emotionally exhausted, according to a new American study on transplant surgeon burnout. Burnout is characterized by high emotional exhaustion, high depersonalization and low levels of personal accomplishment, one expert says, explaining people with burnout often feel emotionally drained, overextended and distant or having a lack of feelings toward patients.
Using statistical tools to map social connections in prairie dogs, researchers have uncovered relationships that escaped traditional observational techniques, shedding light on prairie dog communities that may help limit the spread of bubonic plague and guide future conservation efforts.
A psychology researcher is proposing a new theory to explain why older adults show declining cognitive ability with age, but don't necessarily show declines in the workplace or daily life. One key appears to be how motivated older adults are to maintain focus on cognitive tasks.
A simple blood test that can be used to diagnose whether people have cancer or not has been devised by researchers. The test will enable doctors to rule out cancer in patients presenting with certain symptoms, saving time and preventing costly and unnecessary invasive procedures such as colonoscopies and biopsies being carried out. Alternatively, it could be a useful aid for investigating patients who are suspected of having a cancer that is currently hard to diagnose.
Imagine trying to measure a tennis ball that bounces wildly, every time to a distance a million times its own size. The bouncing obviously creates enormous "background noise" that interferes with the measurement. But if you attach the ball directly to a measuring device, so they bounce together, you can eliminate the noise problem. Physicists have used a similar trick to measure the interaction between the smallest possible magnets -- two single electrons -- after neutralizing magnetic noise that was a million times stronger than the signal they needed to detect.
Researchers explain why genetic fertility problems can persist in a population. Some 15% of adults suffer from fertility problems, many of these due to genetic factors. This is something of a paradox: We might expect such genes, which reduce an individual's ability to reproduce, to disappear from the population. Research may now have solved this riddle. Not only can it explain the high rates of male fertility problems, it may open new avenues in understanding the causes of genetic diseases and their treatment.
Using the body's natural virus killers to prevent and treat HIV infection has been problematic until now because of the strong inflammatory response these molecules can arouse as they get rid of the invaders. Now, research has demonstrated how suppressing the activity of these molecules -- interferons -- around the time of infection could have long-term implications for the course of the disease.