With the help of beneficial bacteria, plants can slam the door when disease pathogens come knocking, University of Delaware researchers have discovered. A scientific team under the leadership of Harsh Bais, assistant professor of plant and soil sciences in UD's College of Agriculture and Natural Resources, found that when pathogens attempt to invade a plant through the tiny open pores in its leaves, a surprising ally comes to the rescue. Soil bacteria at the plant's roots signal the leaf pores to close, thwarting infection. The fascinating defense response is documented ...

Given the well-documented relationship between low birth weight and the increased risk of health problems throughout one's lifespan, it is vital to reduce any potential contributors to low birth weight. A new study by Valerie Earnshaw and her colleagues from Yale University sheds light on one possible causal factor. Their findings, published online in Springer's journal, the Annals of Behavioral Medicine, suggest that chronic, everyday instances of discrimination against pregnant, urban women of color may play a significant role in contributing to low birth weight babies. Twice ...

A new report by researchers from the Johns Hopkins Center for Injury Research and Policy examines the risk factors for injuries to U.S. military personnel from crashes involving highly mobile multipurpose wheeled vehicles (HMMWVs), more commonly known as Humvees. According to the study, involvement in combat and serving as the vehicle's operator or gunner posed the greatest risk for injury. It is the first published analysis of factors associated with Humvee injury risk in a deployed setting, and is in the August issue of the journal Military Medicine. According to the ...

Each year as many as 40,500 critically ill U.S. hospital patients die with an unknown medical condition that may have caused or contributed to their death, Johns Hopkins patient safety experts report in a recent study. In a discussion of their findings, described online in BMJ Quality & Safety, researchers say that although diagnostic errors in the intensive care unit (ICU) may claim as many lives each year as breast cancer, they remain an underappreciated cause of preventable patient harm. "Our study shows that misdiagnosis is alarmingly common in the acute care ...

All dietary fats are not created equal. Some types of fats have been linked to ailments like heart disease and diabetes, while others, like those often found in plants and fish, have well documented health benefits. So why do our bodies respond so destructively to some fats but not others? A new hypothesis described in latest issue of The Quarterly Review of Biology suggests the answer may lie in how different fats interact with the microbes in our guts. According to researchers from the University of New Mexico and Northwestern University, some fats may encourage ...

A coral species that is found in abundance from Indonesia eastward to Fiji, Samoa, and the Line Islands rarely crosses the Eastern Pacific Barrier toward the coast of the Americas, according to a team of researchers led by Iliana Baums, an assistant professor of biology at Penn State University. Darwin hypothesized in 1880 that most species could not disperse across the marine barrier, and Baums's study is the first comprehensive test of that hypothesis using coral. The results of the scientific paper, which will be published in the journal Molecular Ecology, has important ...

NASA's Atmospheric Infrared Sounder or AIRS instrument is an infrared "eye" that flies onboard NASA's Aqua satellite. AIRS has been providing the National Hurricane Center with valuable temperature data on Isaac's clouds and the surrounding sea surface temperatures, and a time series of data shows that Isaac is consolidating. The AIRS instrument has been monitoring Tropical Storm Isaac for several days. AIRS data from Aug. 24, 25, 26 and 27 showed Isaac's movements through the eastern and central Caribbean Sea, across eastern Cuba and into the Gulf of Mexico. On Aug. ...

Munich, Germany – August 27 2012: The Japanese earthquake and tsunami of 11 March 2011, which hit the north-east coast of Japan with a magnitude of 9.0 on the Richter scale, was one of the largest ocean-trench earthquakes ever recorded in Japan. The tsunami caused huge damage, including 15,861 dead and 3018 missing persons, and, as of 6 June 2012, 388,783 destroyed homes. Following an investigation of the ambulance records made by doctors in the Miyagi prefecture, close to the epicentre of the earthquake and where the damage was greatest, cardiologist Dr Hiroaki Shimokawa ...

As solitary animals, giant pandas have developed a number of ways to communicate those times when they are ready to come into close contact. One means of this communication occurs through scent marking. A recent study by San Diego Zoo Global researchers, collaborating with researchers at the Institute of Zoology, Chinese Academy of Science, indicates that pandas make clear and specific choices about what trees are used for scent marking. "Variables affecting the selection of scent-marking sites included bark roughnesss, presence of moss on the tree trunk, tree diameter ...

The extent of the sea ice covering the Arctic Ocean has shrunk. According to scientists from NASA and the NASA-supported National Snow and Ice Data Center (NSIDC) in Boulder, Colo., the amount is the smallest size ever observed in the three decades since consistent satellite observations of the polar cap began. The extent of Arctic sea ice on Aug. 26, as measured by the Special Sensor Microwave/Imager on the U.S. Defense Meteorological Satellite Program spacecraft and analyzed by NASA and NSIDC scientists, was 1.58 million square miles (4.10 million square kilometers), ...

PULLMAN, Wash.—More than 40 plant-based compounds can turn on genes that slow the spread of cancer, according to a first-of-its-kind study by a Washington State University researcher. Gary Meadows, WSU professor and associate dean for graduate education and scholarship in the College of Pharmacy, says he is encouraged by his findings because the spread of cancer is most often what makes the disease fatal. Moreover, says Meadows, diet, nutrients and plant-based chemicals appear to be opening many avenues of attack. "We're always looking for a magic bullet," he says. "Well, ...

This press release is available in Spanish. A U.S. Department of Agriculture (USDA) scientist has found a "green" alternative to a type of fertilizer additive that is believed to contribute to the accumulation of heavy metals in waterways. Ornamental nursery and floral crops require micronutrients like iron, manganese, copper and zinc. But fertilizers that provide these micronutrients often include synthetically produced compounds that bind with the micronutrients so they are available in the root zone. The most commonly used compounds, known as chelating agents, ...

WASHINGTON — The origin of Cerataspis monstrosa has been a mystery as deep as the ocean waters it hails from for more than 180 years. For nearly two centuries, researchers have tried to track down the larva that has shown up in the guts of other fish over time but found no adult counterpart. Until now. George Washington University Biology Professor Keith Crandall cracked the code to the elusive crustacean's DNA this summer. His findings were recently published in the journal "Ecology and Evolution," and his research was funded by the National Science Foundation and the ...

NASA satellites are providing imagery and data on Typhoon Tembin southwest of Taiwan, and Typhoon Bolaven is it barrels northwest through the Yellow Sea. In a stunning image from NASA's Aqua satellite, Bolaven appears twice as large as Tembin. NASA's Moderate Resolution Imaging Spectroradiometer (MODIS) instrument that flies onboard the Terra satellite captured a remarkable image of Typhoon Tembin being dwarfed by giant Typhoon Bolaven at 0240 UTC on Aug. 27, 2012. The visible image shows that the island of Taiwan appears to be squeezed between the two typhoons, while ...

EAST LANSING, Mich. — Mechanisms that protect plants from freezing are placed in storage during the summer and wisely unpacked when days get shorter. In the current issue of the Proceedings of the National Academy of Sciences, Michael Thomashow, University Distinguished Professor of molecular genetics, demonstrates how the CBF (C-repeat binding factor) cold response pathway is inactive during warmer months when days are long, and how it's triggered by waning sunlight to prepare plants for freezing temperatures. The CBF cold response pathway was discovered by Thomashow's ...

COLUMBIA, Mo. — A newly defined genre of literature, "teen sick-lit," features tear-jerking stories of ill adolescents developing romantic relationships. Although "teen sick-lit" tends to adhere to negative stereotypes of the ill and traditional gender roles, it also explores the taboo realm of sexuality, sickness and youth, says the University of Missouri researcher who named the genre in a recent study. Readers and their parents should be aware of how the presentation of disease and disability in these stories can instill prejudices and enforce societal norms in young ...

COLUMBIA, Mo. – Separated and divorced couples are increasingly using emails, texting and social media to communicate with their ex-partners about their children. However, when ex-spouses use that technology to withhold or manipulate information, the children are the ones who suffer most, according to a University of Missouri family studies expert. A new study suggests divorce counselors should teach separated parents effective ways to use communication technology in order to maintain healthy environments for their children. Lawrence Ganong, a professor of human development ...

Living in poverty is often accompanied by conditions that can negatively influence cognitive development. Is it possible that being bilingual might counteract these effects? Although previous research has shown that being bilingual enhances executive functioning in middle-class children, less is known about how it affects lower income populations. In a study forthcoming in Psychological Science, a journal of the Association for Psychological Science, psychological scientist Pascale Engel de Abreu of the University of Luxembourg and colleagues examine the effects of speaking ...

OAK BROOK, Ill. – August 27, 2012 – The American Society for Gastrointestinal Endoscopy's (ASGE) Preservation and Incorporation of Valuable Endoscopic Innovations (PIVI) initiative examines real-time imaging of Barrett's esophagus in an article appearing in the August issue of GIE: Gastrointestinal Endoscopy, ASGE's monthly peer-reviewed scientific journal. This PIVI is one in a series of statements defining the diagnostic or therapeutic threshold that must be met for a technique or device to become considered appropriate for incorporation into clinical practice. Barrett's ...

When it comes to cooking, grocery shopping and playing with children, American moms with full-time jobs spend roughly three-and-half fewer hours per day on these and other chores related to their children's diet and exercise compared to stay-at-home and unemployed mothers, reports a new paper by a Cornell University health economist. Male partners do little to make up the deficit: Employed fathers devote just 13 minutes daily to such activities and non-working fathers contribute 41 minutes, finds the study, which will be printed in the December issue of Economics and ...

OAK BROOK, Ill. – August 27, 2012 – According to a new study, the use of narrow band imaging (NBI) during colonoscopy is sufficiently accurate to allow distal hyperplastic (non-cancerous) polyps to be left in place without removal and small, distal adenomas (pre-cancerous polyps) to be removed and discarded without pathologic assessment. These findings validate NBI criteria based on color, vessels and pit characteristics for predicting real-time colorectal polyp histology. The study appears in the August issue of GIE: Gastrointestinal Endoscopy, the monthly peer-reviewed ...

An international team of scientists has discovered the oldest record of arthropods—invertebrate animals that include insects, arachnids, and crustaceans—preserved in amber. The specimens, one fly and two mites found in millimeter-scale droplets of amber from northeastern Italy, are about 100 million years older than any other amber arthropod ever collected. The group's findings, which are published today in the Proceedings of the National Academy of Sciences, pave the way for a better evolutionary understanding of the most diverse group of organisms in the world. "Amber ...

DURHAM, NC – Over-eager eco-tourists intent on seeing spinner dolphins up close may inadvertently be disturbing the charismatic animals' daytime rest periods and driving them out of safe habitats in bays along Hawaii's coast. Scientists at Duke and Stony Brook universities have developed a promising new tool that may help to limit repeated human disturbances and help reduce their negative impacts on the dolphins. "Using the maps produced through this study we can identify the bays where the effects of human activities on spinner dolphins should be monitored most closely, ...

LOS ANGELES — Aug. 27, 2012 –Cedars-Sinai researchers have found that a common vitamin may have the potential to provide a powerful weapon to fight certain "superbugs," antibiotic-resistant staph infections that health experts see as a threat to public health. The research, published in the September 2012 edition of The Journal of Clinical Investigation, found that high doses of the nicotinamide form of vitamin B3 stimulated a specific gene (CEBPE), enhancing white blood cells' ability to combat staph infections, including methicillin-resistant Staphylococcus aureus ...

MAYWOOD, Ill. - A new study raises a cautionary note about the increasing use of a minimally invasive procedure to repair ruptured abdominal aortic aneurysms, according to vascular surgeon Dr. Jae Sung Cho of Loyola University Medical Center. A ruptured abdominal aortic aneurysm (AAA) causes massive internal bleeding that requires immediate emergency surgery to save the patient. The rupture can be repaired either with an open surgery or with a newer, less-invasive endovascular technique that involves the use of a catheter. At first glance, the endovascular technique ...