ScienceDaily Environment Headlines
for Wednesday, June 1, 2011
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New NASA map reveals tropical forest carbon storage (June 1, 2011) -- A NASA-led research team has used a variety of NASA satellite data to create the most precise map ever produced depicting the amount and location of carbon stored in Earth's tropical forests. The data are expected to provide a baseline for ongoing carbon monitoring and research and serve as a useful resource for managing the greenhouse gas carbon dioxide. ... > full story
Dangerous bacteria found on cell phones of hospital patients (June 1, 2011) -- Cell phones used by patients and their visitors were twice as likely to contain potentially dangerous bacteria as those of health-care workers, according to a new study. ... > full story
Antibodies successful in treatment of the hemolytic-uremic syndrome from enterohemorrhagic Escherichia coli (June 1, 2011) -- A team of physicians from Germany, Canada, and France reports on the successful treatment of three young children who were suffering from a severe hemolytic-uremic syndrome (HUS) after an infection with enterohemorrhagic Escherichia coli (EHEC). The infections occurred in 2010. EHEC are the bacteria that cause the current wave of infections that have already claimed ten lives in Germany. The number of suspected and confirmed cases of EHEC has now reached 700. ... > full story
New endemic beetles discovered in Iberian Peninsula (June 1, 2011) -- A European research team has described two new beetle species measuring two millimeters in length. The beetles were found in streams in the Pyrenees and Pre-Pyrenees mountains (from Gipuzkoa to Girona) and in the Sierra de la Demanda mountains (Burgos). Experts had previously thought that they belonged to another European species. ... > full story
Climate change allows invasive weed to outcompete local species (June 1, 2011) -- Yellow starthistle already causes millions of dollars in damage to pastures in western states each year, and as climate changes, land managers can expect the problem with that weed and others to escalate. When exposed to increased carbon dioxide, precipitation, nitrogen and temperature -- all expected results of climate change -- yellow starthistle in some cases grew to six times its normal size while the other grassland species remained relatively unchanged, according to a new study. ... > full story
Diagnosing stomach disease in pet reptiles (May 31, 2011) -- A popular “get well” card shows a raccoon saying to a snake, “You wouldn’t get these stomach aches if you chewed your food properly.” Vets know, however, that indigestion in snakes and other reptiles often results not from swallowing food whole but from a parasitic infection. The gastrointestinal disease cryptosporidiosis represents a particularly severe problem. Unfortunately, though, diagnosis is extremely difficult. Scientists have now developed a test for the identification of the cryptosporidia that cause the condition, enabling them to assess its prevalence in pet lizards and snakes. ... > full story
Scientists crack the spiders' web code (May 31, 2011) -- Decorative white silk crosses are an ingenious tactic used by orb-weaving spiders to protect their webs from damage, a new study has revealed. ... > full story
Code green: Energy-efficient programming to curb computers' power use (May 31, 2011) -- A new system called EnerJ helps computer programmers go green, letting them cut a program's energy consumption by up to 50 percent. ... > full story
Researchers solve mammoth evolutionary puzzle: The woollies weren't picky, happy to interbreed (May 31, 2011) -- A DNA-based study sheds new light on the complex evolutionary history of the woolly mammoth, suggesting it mated with a completely different and much larger species. The research found the woolly mammoth, which lived in the cold climate of the Arctic tundra, interbred with the Columbian mammoth, which preferred the more temperate regions of North America and was some 25 percent larger. ... > full story
Most biologically rich island in Southern Ocean (May 31, 2011) -- The first comprehensive study of sea creatures around the sub-Antarctic island of South Georgia reveals a region that is richer in biodiversity than even many tropical sites, such as the Galapagos Islands. The study provides an important benchmark to monitor how these species will respond to future environmental change. ... > full story
'E-waste pollution' a threat to human health, new research suggests (May 31, 2011) -- In addition to its damaging effect on the environment and its illegal smuggling into developing countries, researchers have now linked e-waste to adverse effects on human health, such as inflammation and oxidative stress -- precursors to cardiovascular disease, DNA damage and possibly cancer. ... > full story
Insights into the motion of dogs (May 31, 2011) -- How does a dog run? Until recently, even experts found it nearly impossible to answer this simple sounding question. Zoologists have now presented the results of the most extensive study worldwide concerning the motion of dogs and offered new insights into their course of movement. ... > full story
How plants control the formation of wood cells (May 31, 2011) -- An international group led by researchers in Finland has discovered the genetic process that controls the development of wood cells in the roots of plants. Xylem (wood cells) is the vascular tissue that transports water and nutrients upward from the root, also contributing to the formation of the woody element in the stem. The work presents a potential method for engineering plants to produce more wood. ... > full story
Climate played big role in Vikings' disappearance from Greenland (May 31, 2011) -- Greenland's early Viking settlers were subjected to rapidly changing climate. Temperatures plunged several degrees in a span of decades, according to researchers. A reconstruction of 5,600 years of climate history from lakes near the Norse settlement in western Greenland also shows how climate affected the Dorset and Saqqaq cultures. ... > full story
Sweet defence against lethal bacteria: Synthesizing a potential vaccine candidate for an antibiotic-resistant pathogen (May 31, 2011) -- There is now a promising vaccine candidate for combating the pathogen which causes one of the most common and dangerous hospital infections. An international team of scientists has developed a vaccine based on a carbohydrate against the Clostridium difficile bacterium, which is known to cause serious gastrointestinal diseases mainly in hospitals. The sugar-based vaccine elicited a specific and effective immune response in mice. Moreover, the scientists have also discovered strong indications that the substance can stimulate the human immune system to form antibodies against the bacterium. ... > full story
Japan earthquake appears to increase quake risk elsewhere in the country (May 31, 2011) -- Japan's recent magnitude 9.0 earthquake, which triggered a devastating tsunami, relieved stress along part of the quake fault but also has contributed to the build up of stress in other areas, putting some of the country at risk for up to years of sizeable aftershocks and perhaps new main shocks, scientists say. ... > full story
New mouse model may lead to new therapies for degenerative diseases (May 31, 2011) -- Researchers have engineered a new mouse that that can be used for research on degenerative disease. ... > full story
Global warming may increase the capacity of trees to store carbon (May 31, 2011) -- One helpful action anyone can take in response to global warming is to plant trees and preserve forests. Trees and plants capture carbon dioxide during photosynthesis, thereby removing the most abundant greenhouse gas from the atmosphere and storing some of it in their woody tissue. New research shows that global warming may affect the capacity of trees to store carbon by altering the forest nitrogen cycling. A field experiment showed that warmer temperatures stimulated the gain of carbon stored in trees as woody tissue. ... > full story
Dietary inorganic nitrate may reduce heart dysfunction caused by powerful anti-cancer drug (May 31, 2011) -- Researchers have found that nutrient supplementation, like the kind that is found in leafy greens, spinach and lettuce, may reduce the damage to the heart caused by a powerful anti-cancer drug. ... > full story
Mating rivalry among furred and feathered: Variety is spice of life (May 31, 2011) -- Birds do it. Bees do it. Fish, lobsters, frogs and lizards do it, too. But when it comes to securing a mate in the animal world, variety is literally the spice of life. A group of scientists has found flexibility in mating rituals is the key to reproductive success when males outnumber females. ... > full story
Cover crop seeder pulls triple duty for small farms (May 31, 2011) -- Farmers using a cover crop seeder developed by agricultural scientists may eventually need only a single trip across the field to accomplish what takes most farmers three passes and several pieces of equipment to do. ... > full story
More focus needed on mental health triage in disaster preparedness, bioethicists urge (May 31, 2011) -- Bioethicists say disaster-response planning has overlooked the needs of people who suffer from pre-existing, serious mental conditions. Survivors already diagnosed with schizophrenia, dementia, addictions and bipolar disorder are vulnerable long before disaster strikes, they point out. ... > full story
Scientists discover the largest assembly of whale sharks ever recorded (May 30, 2011) -- Whale sharks are often thought to be solitary behemoths that live and feed in the open ocean. However, scientists have now found that this is not necessarily the case, finding that whale sharks can be gregarious and amass in the hundreds to feed in coastal waters. ... > full story
Assessing the influence of Alaska glaciers is slippery work (May 30, 2011) -- With an estimated 34,000 square miles of ice, an area about the size of Maine, Alaska's multitude of glaciers have a global impact. Scientists have now outlined the complexity and influence of Alaska glaciers in the journal Science. ... > full story
Can you hear me now? Songbirds tweak their tunes in different ways to cope with clamor (May 30, 2011) -- Some birds that live near noisy sites can alter their songs to deal with din. But closely related species with similar songs may tweak their tunes in different ways, says a new study. ... > full story
Flexible films for photovoltaics (May 30, 2011) -- Displays that can be rolled up and flexible solar cells -- both are potential future markets. Barrier layers that protect thin-film solar cells from oxygen and water vapor and thus increase their useful life are an essential component. ... > full story
New synchrotron technique could see hidden building blocks of life (May 30, 2011) -- Scientists have developed a new synchrotron X-ray technique that may revolutionize the chemical analysis of rare materials like meteoric rock samples or fossils. ... > full story
Sewage-derived nitrogen increasingly polluting Caribbean ecosystems (May 30, 2011) -- A new study finds that while fertilizer has been the dominant source of nitrogen pollution in Caribbean coastal ecosystems for the past 50 years, such pollution is on the decline. But now, sewage-derived nitrogen is increasingly becoming the top source of such pollution in those areas. ... > full story
Ocean acidification will likely reduce diversity, resiliency in coral reef ecosystems (May 30, 2011) -- Ocean acidification, along with increased ocean temperatures, will likely severely reduce the diversity and resilience of coral reef ecosystems within this century, new research suggests. ... > full story
What is a laboratory mouse? (May 30, 2011) -- Scientists have created a genome-wide, high-resolution map of most of the inbred mouse strains used today. Their conclusion: Most of the mice in use today represent only limited genetic diversity, which could be significantly expanded with the addition of more wild mouse populations. ... > full story
New Delhi metallo-beta-lactamase-1 enzyme acquired in Canada (May 30, 2011) -- An enzyme associated with extensive antibiotic resistance called New Delhi metallo-ß-lactamase-1 (NDM-1), endemic in India and Pakistan and spreading worldwide, has been found in two people in the Toronto area, one of whom acquired it in Canada, states a new case report. The report outlines challenges and approaches to managing and identifying this pathogen, which is highly resistant to treatment. ... > full story
Biological circuits for synthetic biology (May 29, 2011) -- Using the tools of synthetic biology, researchers have engineered the first RNA-based regulatory system that can independently control the transcription activities of multiple targets in a single cell. This is a significant advance for the design and construction of programmable genetic networks. ... > full story
Iron-ferrying protein may be 'universal Achilles heel' for parasitic worms (May 29, 2011) -- Researchers have discovered a tiny protein without which the soil and lab-dwelling worm C. elegans can't deliver iron-rich heme taken in from their diets to the rest of their bodies or to their developing embryos. The finding offers important insight into the transport of the essential ingredient in worms and other animals, including humans. ... > full story
Reindeer see a weird and wonderful world of ultraviolet light (May 29, 2011) -- Researchers have discovered that the ultraviolet (UV) light that causes the temporary but painful condition of snow blindness in humans is life-saving for reindeer in the Arctic. ... > full story
Combo method reveals cells' signal systems (May 29, 2011) -- Our understanding of what differentiates cancer cells from normal cells is limited by a lack of methods for studying the complex signal systems of individual cells. By combing two different methods, researchers have now provided the research world with a tool for studying signal paths on several levels at the same time. ... > full story
New software tool helps evaluate natural cooling options for buildings (May 29, 2011) -- A new, free software tool could prove to be a breath of fresh air for architects and designers of ventilation systems for "green" commercial buildings. ... > full story
Stars help researchers track space junk (May 29, 2011) -- Researchers have developed a method to track the movement of geostationary objects using the position of the stars, which could help to monitor space debris. The technique can be used with small telescopes and in places that are not very dark. ... > full story
Mapping ocean surface currents: West coast radar network is world's largest (May 29, 2011) -- A network of high-frequency radar systems designed for mapping ocean surface currents now provides detail of coastal ocean dynamics along the US West Coast never before available. ... > full story
Scientists argue against conclusion that bacteria consumed Deepwater Horizon methane (May 29, 2011) -- New research casts doubt on a widely publicized study that concluded that a bacterial bloom in the Gulf of Mexico consumed the methane discharged from the Deepwater Horizon well. ... > full story
Significant role played by oceans in ancient global cooling (May 28, 2011) -- Thirty-eight million years ago, tropical jungles thrived in what are now the cornfields of the American Midwest and furry marsupials wandered temperate forests in what is now the frozen Antarctic. A debate has long been raging in the scientific community on what changes in our global climate system led to such a major shift from the more tropical, greenhouse climate of the Eocene to the modern and much cooler climates of today. Researchers have now found some of the strongest evidence to date that the Antarctic Circumpolar Current (ACC) played a key role in the major shift in the global climate that began approximately 38 million years ago. ... > full story
Cystic fibrosis-associated bacteria could help fight back against antibiotic resistance (May 28, 2011) -- A bacteria which infects people with cystic fibrosis could help combat other antibiotic-resistant microbes, according to new research. Scientists have discovered antibiotics from Burkholderia are effective against MRSA and even other cystic fibrosis infecting bacteria. ... > full story
Better viewing through fluorescent nanotubes when peering into innards of a mouse (May 28, 2011) -- Researchers have developed a way to see deeper -- and more clearly -- into bodily organs of laboratory mice used in studies of medications. Fluorescent carbon nanotubes, injected into the mice, provide clearer images. ... > full story
Climate change and marine mammals: Winners and losers (May 28, 2011) -- Current hotspots of marine mammal diversity are concentrated in the temperate waters of the southern hemisphere, and the number of cetacean and pinniped species will likely remain highest in these areas in the coming 40 years -- regardless of climate change. However, on the level of individual species the picture may be different: Whereas about half the species of marine mammals will experience some loss in their habitat, distributional ranges of the other half may increase by up to 40 percent. ... > full story
Human impacts of rising oceans will extend well beyond coasts (May 28, 2011) -- Estimates that are based on current, static population data can greatly misrepresent the true extent -- and the pronounced variability -- of the human toll of climate change, researchers say. ... > full story
What fish is on your plate? How new technologies can tackle fishing fraud (May 28, 2011) -- Low-cost catfish fillets sold as expensive sole fillets or cod caught in the North Sea but declared as originating from the Baltic Sea are both examples of types of fraud in the fisheries sector. A new report shows how molecular technologies - based on genetics, genomics, chemistry and forensics - can provide clear answers to questions such as "what species does this fish product come from....where was this fish caught....is it wild or farmed?" ... > full story
Bleach in the Icelandic Volcanic Cloud (May 27, 2011) -- Chlorine in the ash plume of the Icelandic volcano Eyjafjallajökull attacked atmospheric trace gases. One year after the Eyjafjallajökull volcano in Iceland brought European air traffic to a standstill its ash plume revealed a surprising scientific finding: Researchers found that the ash plume contained not only the common volcanic gas sulfur dioxide, but also free chlorine radicals. Chlorine radicals are extremely reactive and even small amounts can have a profound impact on local atmospheric chemistry. The findings give solid evidence of volcanic plume chlorine radical chemistry and allowed calculations of chlorine radical concentrations. ... > full story
Green and lean: Secreting bacteria eliminate cost barriers for renewable biofuel production (May 27, 2011) -- Scientists have developed a process that removes a key obstacle to producing low-cost, renewable biofuels from bacteria. The team has reprogrammed photosynthetic microbes to secrete high-energy fats, making byproduct recovery and conversion to biofuels easier and potentially more commercially viable. ... > full story
Naturally occurring plant alkaloids could slow down Alzheimer's disease, study suggests (May 27, 2011) -- A family of naturally occurring plant compounds could help prevent or delay memory loss associated with Alzheimer's disease, according to a new study. ... > full story
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