Kamis, 03 Februari 2011

ScienceDaily Environment Headlines

for Thursday, February 3, 2011

Welcome to another edition of ScienceDaily's email newsletter. You can change your subscription options or unsubscribe at any time.

Giant virus, tiny protein crystals show X-ray laser's power and potential (February 3, 2011) -- Two new studies demonstrate how the unique capabilities of the world's first hard X-ray free-electron laser could revolutionize the study of life. In one study, researchers used the laser to demonstrate a shortcut for determining the 3-D structures of proteins. In a separate paper, the same team reported making the first single-shot images of intact viruses, paving the way for snapshots and movies of molecules, viruses and live microbes in action. ... > full story

Sea urchin embryos could be used to evaluate quality of marine environment, researcher proposes (February 3, 2011) -- Estuaries are highly appropriate systems for evaluating contamination. They are areas of accumulation of sediments and, effectively, numerous contaminants are found associated with these sedimentary particles. In order to study the effects of such contaminants in the environment, a researcher has proposed exposing sea urchin embryos to sediments suspected of being contaminated, in order to quantify any biological response from the organisms. ... > full story

Ice cores yield rich history of climate change (February 2, 2011) -- On Friday, Jan. 28 in Antarctica, a research team investigating the last 100,000 years of Earth's climate history reached an important milestone completing the main ice core to a depth of 3,331 meters (10,928 feet) at West Antarctic Ice Sheet Divide. The project will be completed over the next two years with some additional coring and borehole logging to obtain additional information and samples of the ice for the study of the climate record contained in the core. ... > full story

NASA Aqua Satellite sees powerful Cyclone Yasi make landfall in Queensland, Australia (February 2, 2011) -- NASA's Aqua satellite captured visible and infrared imagery of powerful Cyclone Yasi as it was making landfall in Queensland. The center of the monster cyclone Yasi made landfall on Australia's northeastern coast early Thursday (Australia local time) bringing heavy rainfall, severe winds and storm surge. ... > full story

Road may disrupt migration, ruin Serengeti, study finds (February 2, 2011) -- A new study finds that building a proposed highway through Serengeti National Park may devastate one of the world's last large-scale herd migrations and the region's ecosystem. ... > full story

In tiny fruit flies, researchers identify metabolic 'switch' that links normal growth to cancer (February 2, 2011) -- Until now, researchers have known nothing about the metabolic state that occurs when cells divide during early development. Human genetics researchers show in a new study that this cell division in Drosophila depends on a metabolic state much like when cells run amok to form cancerous tumors. ... > full story

Anthropologists discover earliest cemetery in Middle East (February 2, 2011) -- Anthropologists have discovered the oldest cemetery in the Middle East at a 16,500-year-old site in northern Jordan. The cemetery includes graves containing human remains buried alongside those of a red fox, suggesting that the animal was possibly kept as a pet by humans long before dogs ever were. ... > full story

Ritalin may ease early iron deficiency damage (February 2, 2011) -- Ritalin may help improve brain function in adolescent rats that were iron deficient during infancy, according to a neuroscientists. This may have implications for iron-deficient human infants as well. ... > full story

Rain in Spain is on the decline, research finds (February 2, 2011) -- A new study has studied precipitation trends in Spain's 10 hydrological basins over the 1946 to 2005 period. The results show that precipitation has declined overall between the months of March and June, reducing the length of the rainy season. The rains are heavier in October in the north west of the country. ... > full story

'Air laser' may sniff bombs, pollutants from a distance (February 2, 2011) -- Engineers have developed a new laser sensing technology that may allow soldiers to detect hidden bombs from a distance and scientists to better measure airborne environmental pollutants and greenhouse gasses. ... > full story

NASA satellite captures U.S. 'Big Chill' (February 2, 2011) -- The current winter storm system blasting much of the United States is depicted in a new NASA satellite image from the Atmospheric Infrared Sounder (AIRS) instrument on NASA's Aqua satellite. ... > full story

Arctic mercury mystery: Meterological conditions in the spring and summer to blame? (February 2, 2011) -- More mercury is deposited in the Arctic than anywhere else on the planet. Researchers think one explanation for this may lie in the meteorological conditions in the Arctic spring and summer. ... > full story

Monster cyclone Yasi eyes Australia in NASA image (February 2, 2011) -- Mass evacuations are underway in the northeastern Australian state of Queensland in anticipation of what forecasters expect will be the largest cyclone ever to hit the continent. ... > full story

Do chimpanzees mourn their dead infants? (February 2, 2011) -- For the first time, researchers report in detail how a chimpanzee mother responds to the death of her infant. The chimpanzee mother shows behaviors not typically seen directed toward live infants, such as placing her fingers against the neck and laying the infant's body on the ground to watch it from a distance. The observations provide unique insights into how chimpanzees, one of humans' closest primate relatives, learn about death. ... > full story

Earth's life support systems discussed in an open-access special issue (February 2, 2011) -- In the search for life on Mars or any planet, there is much more than the presence of carbon and oxygen to consider. Using Earth's biogeochemical cycles as a reference point, elements like nitrogen, iron and sulfur are just as important for supporting life. As explored in studies published in February's open-access Special Issue of Frontiers in Ecology and the Environment, the most basic elements work together to support an extraordinary diversity of life. ... > full story

NASA satellite tracks menacing Australian cyclone (February 1, 2011) -- Fresh on the heels of a series of crippling floods that began in December 2010, and a small tropical cyclone, Anthony, this past weekend, the northeastern Australian state of Queensland is now bracing for what could become one of the largest tropical cyclones the state has ever seen. ... > full story

Intermittent preventive treatment of malaria in children and insecticide-treated bednets reduce prevalence of infection by up to 85 percent (February 1, 2011) -- Two separate studies -- carried out in Burkina Faso and Mali -- have found that combining intermittent preventive treatment of malaria in children with insecticide-treated bednets can substantially reduce the incidence of severe malaria. ... > full story

Technology protects cotton from caterpillar's appetite (February 1, 2011) -- To demonstrate tiny cotton-eating caterpillars' destructive power, entomologists planted two cotton varieties -- one genetically modified to provide protection and one not -- in a demonstration field. ... > full story

Bacteria in the gut may influence brain development (February 1, 2011) -- Scientists have found that gut bacteria may influence mammalian brain development and adult behavior. ... > full story

Biologists discover 'control center' for sperm production; Study uncovers genetic hierarchy in plant sperm formation (February 1, 2011) -- Biologists have published results of a new study into the intricacies of sex in flowering plants. They have found that a gene in plants, called DUO1, acts as a master switch to ensure twin fertile sperm cells are made in each pollen grain. ... > full story

NASA satellites capture data on monster winter storm affecting 30 U.S. states (February 1, 2011) -- One of the largest winter storms since the 1950s is affecting 30 U.S. states with snow, sleet, freezing rain and rain. NASA satellites have gathering data on the storm that stretches from Texas and the Rockies to the New England states. ... > full story

Seeking social genes: Researchers compare insect genomes to hone in on genes associated with complex social structure (February 1, 2011) -- In order understand the evolution of complex societies, researchers are sequencing the genomes of social insects. The most recent data come from several species of ants, including the red harvester ant, Pogonomyrmex barbatus. ... > full story

Where has all the Gulf spill oil gone? (February 1, 2011) -- Many questions remain about the fate and environmental impact of the marine oil caused by the massive spill in the Gulf of Mexico from the Deepwater Horizon offshore drilling platform. ... > full story

Cluster encounters 'natural particle accelerator' above Earth's atmosphere: How northern and southern lights are generated (February 1, 2011) -- The European Space Agency's Cluster satellites have flown through a natural particle accelerator just above Earth's atmosphere. The data they collected are unlocking how most of the dramatic displays of the northern and southern lights are generated. ... > full story

Clean streets and intact road surfaces help to keep the air clean (February 1, 2011) -- Road traffic is one of the main sources of fine particulate matter in the atmosphere, above all when the weather situation favors the creation of winter smog. Vehicle tailpipe emissions are responsible for just less than half of the fine particles, however. The majority of this pollutant is produced by mechanical wear and resuspension of dust due to air turbulence from passing vehicles, as a study by atmospheric scientists has shown. ... > full story

Newly discovered dinosaur likely father of Triceratops (February 1, 2011) -- Triceratops and Torosaurus have long been considered the kings of the horned dinosaurs. But a new discovery traces the giants' family tree further back in time, when a newly discovered species called Titanoceratops appears to have reigned long before its more well-known descendants, making it the earliest known member of its family. ... > full story

New probiotic combats inflammatory bowel disease (February 1, 2011) -- You know the probiotics in your peach yogurt are healthful, but now it appears they may also be a powerful treatment for disease. A genetically tweaked version of a common probiotic in yogurt and cheese appears to be an effective therapy for inflammatory bowel diseases including Crohn's disease and ulcerative colitis. Researchers found the novel probiotic significantly halted disease progression in a preclinical study. It may also be useful in treating colon cancer, researchers suggest. ... > full story

Dogs can accurately sniff out early stage bowel cancer (February 1, 2011) -- Dogs can sniff out bowel cancer in breath and stool samples, with a very high degree of accuracy -- even in the early stages of the disease -- reveals new research. ... > full story

Argentine ant genome sheds light on a successful pest (February 1, 2011) -- Researchers have unlocked the genetic code of the highly invasive Argentine ant, providing clues as to why this species has been so successful. ... > full story

Bugs might convert biodiesel waste into new fuel (February 1, 2011) -- A strain of bacteria found in soil is being studied for its ability to convert waste from a promising alternative fuel into several useful materials, including another alternative fuel. ... > full story

Explosive- and drug-sniffing dog performance is affected by their handlers' beliefs (February 1, 2011) -- Drug- and explosives-sniffing dog/handler teams' performance is affected by human handlers' beliefs, possibly in response to subtle, unintentional handler cues, a new study has found. The study found that detection-dog/handler teams erroneously "alerted," or identified a scent, when there was no scent present more than 200 times -- particularly when the handler believed that there was scent present. ... > full story

Low-energy remediation with patented microbes: Naturally occurring microbes break down chlorinated solvents (February 1, 2011) -- Scientists have patented a consortium of microbes that have an appetite for chlorinated volatile organic compounds, similar to dry-cleaning fluid. ... > full story

Go green to give a boost to employee morale (February 1, 2011) -- In a global recession, most people are thankful to have a job, but a new study suggests that employees are more likely to be satisfied with their jobs if they are working for a company that is perceived to be "green." The financial performance of companies fails to correlate with employee happiness. ... > full story

New quartet of ant genomes sequenced (February 1, 2011) -- Ants are dominant members of almost all terrestrial ecosystems; they are master architects, voracious predators, farmers, ranchers, scavengers and come in a fantastic array of shapes, sizes and colors. Almost all humans have come into contact with ants in one fashion or another. There are fire ants in back yards, Argentine ants in kitchens, harvester ants in children's ant farms, and trains of leaf-cutter ants dismantling forests in documentaries. Ants originated more than 100 million years ago, their ecological dominance and evolutionary success, complex societies, variation in form and function, and the diverse roles they play in ecosystems, collectively contribute to the scientific rationale behind scientists' efforts to sequence their genomes. ... > full story

New appreciation of the ecology-evolution dynamic (January 31, 2011) -- Ecology drives evolution. Scientists now describe a growing evidence that the reverse is also true, and explores what that might mean to our understanding of how environmental change affects species and vice-versa. ... > full story

Secrets in stone: Rare archaeological find in Norway (January 31, 2011) -- It looked to be a routine excavation of what was thought to be a burial mound. But beneath the mound, archaeologists from Norway found something more: unusual Bronze Age petroglyphs. ... > full story

Plants can adapt genetically to survive harsh environments (January 31, 2011) -- Scientist have found genetic evidence of how some plants adapt to live in unfavorable conditions, a finding he believes could one day be used to help food crops survive in new or changing environments. ... > full story

New African wolf discovered (January 31, 2011) -- Scientists studying genetic evidence have discovered a new species of wolf living in Africa. The researchers have proved that the mysterious animal, known as the 'Egyptian jackal' and often confused with the golden jackal, is not a sub-species of jackal but a gray wolf. ... > full story

Plankton inspires creation of stealth armor for slow-release microscopic drug vehicles (January 31, 2011) -- The ability of some plankton and bacteria to build an extra natural layer of nanoparticle-like armor has inspired chemists to devise a startlingly simple way to give drug bearing polymer vesicles (microscopic polymer based sacs of liquid) their own armored protection, and in some cases provide "stealth" capabilities which can avoid the body's defenses while releasing the drug. ... > full story

Young rats given polyphenols show less endothelial function deterioration with aging (January 31, 2011) -- A new study examined whether intake of red wine polyphenols, a rich source of natural antioxidants, prevents aging-related impairment of vascular function and physical exercise capacity. ... > full story

Surf's up: New research provides precise way to monitor ocean wave behavior, shore impacts (January 31, 2011) -- Engineers have created a new type of "stereo vision" to use in studying ocean waves as they pound against the shore, providing a better way to understand and monitor this violent, ever-changing environment. ... > full story

Mussel power: Universal solvent no match for new self-healing sticky gel (January 31, 2011) -- Scientists can now manufacture a synthetic version of the self-healing sticky substance that mussels use to anchor themselves to rocks in pounding ocean surf and surging tidal basins. Potential applications include use as an adhesive or coating for underwater machinery or in biomedical settings as a surgical adhesive or bonding agent for implants. ... > full story

War, plague no match for deforestation in driving CO<sub>2</sub> buildup (January 31, 2011) -- Genghis Khan and his Mongol hordes had an impact on the global carbon cycle as big as today's annual demand for gasoline. The Black Death, on the other hand, came and went too quickly for it to cause much of a blip in the global carbon budget. Dwarfing both of these events, however, has been the historical trend towards increasing deforestation as crop and pasture lands expanded to feed growing human populations. ... > full story

Shape-shifting sugars pinned down (January 31, 2011) -- Scientists have solved a 50-year-old puzzle about how, why or indeed if, sugar molecules change their shape. ... > full story

Antibiotic offers potential for anti-cancer activity (January 31, 2011) -- An antibiotic known for its immunosuppressive functions could also point the way to the development of new anti-cancer agents. ... > full story

Nerve cell molecule has antidepressant effect; animal study may lead to more effective treatments for depression (January 31, 2011) -- Mice that lack a molecule involved in regulating nerve cell signaling are more active and resilient to stressful situations, a new study shows. Mice lacking the molecule -- known as Cdk5 -- exhibited the same behaviors seen in mice given antidepressant drugs. ... > full story

Sprouts? Supplements? Team them up to boost broccoli's cancer-fighting power (January 31, 2011) -- A new study provides convincing evidence that the way you prepare and consume your broccoli matters, and also suggests that teaming broccoli with broccoli sprouts may make the vegetable's anti-cancer effect almost twice as powerful. ... > full story

Stem cell marker regulates synapse formation (January 31, 2011) -- Among stem cell biologists there are few better-known proteins than nestin, whose very presence in an immature cell identifies it as a "stem cell," such as a neural stem cell. As helpful as this is to researchers, until now no one knew which purpose nestin serves in a cell. ... > full story

Copyright 1995-2010 © ScienceDaily LLC. All rights reserved. Terms of use.

This message was sent from ScienceDaily to beritanarablog@gmail.com. It was sent from: ScienceDaily, 1 Research Court, Suite 450, Rockville, MD 20850. You can modify/update your subscription via the link below.

Email Marketing by
iContact - Try It Free!

To update/change your profile click here