Sabtu, 26 Maret 2011

ScienceDaily Environment Headlines

for Saturday, March 26, 2011

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Kudzu vines spreading north from US Southeast with warming climate (March 25, 2011) -- Kudzu, the plant scourge of the US Southeast. The long tendrils of this woody vine, or liana, are on the move north with a warming climate. ... > full story

Conch shell gives nano insights into composite materials (March 25, 2011) -- Researchers use the conch shell as an example of 'toughness-by-architecture' in the quest for new synthetic materials for engineering, construction and aerospace applications. ... > full story

Uncertain future for Joshua trees in US Southwest projected with climate change (March 25, 2011) -- Temperature increases resulting from climate change in the US Southwest will likely eliminate Joshua trees from 90 percent of their current range in 60 to 90 years, according to a new study. ... > full story

Cruise ship norovirus outbreak highlights how infections spread (March 25, 2011) -- Norovirus is the leading cause of acute gastroenteritis in the United States and is estimated to cause nearly 21 million cases annually. The results of an investigation of a 2009 outbreak on a cruise ship shed light on how the infections can spread and the steps both passengers and crew can take to prevent them. ... > full story

In vivo systems biology: Using computer models, systems biologists can predict complicated behavior of cells in living animals (March 25, 2011) -- Researchers report that they have created a new computational model that describes how intestinal cells in mice respond to a natural chemical called tumor necrosis factor (TNF). ... > full story

MRSA infection shown to be seasonal (March 25, 2011) -- A new study has found a significant increase in the occurrence of methicillin-resistant Staphylococcus aureus (MRSA) infections in the summer and autumn months. The increase was more pronounced in the pediatric population than in adults. ... > full story

Wild birds may play a role in the spread of bird flu, new research suggests (March 25, 2011) -- Wild migratory birds may indeed play a role in the spread of bird flu, also known as highly pathogenic avian influenza H5N1. ... > full story

Eskimo study suggests high consumption of omega-3s in fish-rich diet reduces obesity-related disease risk (March 25, 2011) -- A study of Yup'ik Eskimos in Alaska, who on average consume 20 times more omega-3 fats from fish than people in the lower 48 states, suggests that a high intake of these fats helps prevent obesity-related chronic diseases such as diabetes and heart disease. ... > full story

Russian boreal forests undergoing vegetation change, study shows (March 25, 2011) -- Russia's boreal forest -- the largest continuous expanse of forest in the world, found in the country's cold northern regions -- is undergoing an accelerating large-scale shift in vegetation types as a result of globally and regionally warming climate. That in turn is creating an even warmer climate in the region, according to a new study. ... > full story

Religious young adults become obese by middle age: Cause may be unhealthy food at religious activities (March 25, 2011) -- Could it be the potato salad? Young adults who frequently attend religious activities are 50 percent more likely to become obese by middle age as young adults with no religious involvement, according to new research. This is the first longitudinal study to examine the development of obesity in people with various degrees of religious involvement. The cause may be unhealthy food served at religious activities. ... > full story

Artifacts in Texas predate Clovis culture by 2,500 years, new study shows (March 25, 2011) -- Researchers in Texas have discovered thousands of human artifacts in a layer of earth that lies directly beneath an assemblage of Clovis relics, expanding evidence that other cultures preceded the Clovis culture in North America. ... > full story

Unexpected action of bisphenol A on the inner ear of certain vertebrates (March 25, 2011) -- Bisphenol A, whose impact on reproduction and development is the subject of numerous studies, induces anomalies in the inner ear of embryos of certain vertebrates. This new, completely unsuspected effect has been demonstrated on zebrafish and Xenopus, a type of frog. These results illustrate, for the first time, the sensitivity of the inner ear in vertebrates to bisphenol A. The study demonstrates that the effects of this chemical compound on the embryonic development of animals, including mammals, now needs to be explored in greater depth. ... > full story

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