Minggu, 26 September 2010

ScienceDaily Top Science Headlines

for Sunday, September 26, 2010

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Newly created material resembles cilia (September 25, 2010) -- Scientists recently imitated Mother Nature by developing, for the first time, a new, skinny-molecule-based material that resembles cilia, the tiny, hair-like structures through which organisms derive smell, vision, hearing and fluid flow. ... > full story

Kids and diabetes risk: Do chromosomes hold new clues? (September 25, 2010) -- Children who have a high risk of developing Type 2 diabetes might be identified earlier by way of telltale biomarkers now being sought in new studies. ... > full story

Making bees less busy: Social environment changes internal clocks (September 25, 2010) -- Honey bees removed from their usual roles in the hive quickly and drastically changed their biological rhythms, according to a new study. The changes were evident in both the bees' behavior and in their internal clocks. These findings indicate that social environment has a significant effect on the physiology and behavior of animals. ... > full story

Use of sunless tanning products -- common in teens -- may encourage sun safety in women (September 25, 2010) -- About one in ten US adolescents uses sunless tanning products, and an intervention promoting these products as an alternative to regular tanning may reduce sunbathing and sunburns among adult women, according to two new reports. ... > full story

Irish lizards threatened by agriculture (September 25, 2010) -- A new ecological network is urgently needed in Northern Ireland to ensure the continued survival of its precious lizard population, according to researchers. Lizards are found in coastal areas, heath and boglands around Northern Ireland, but a new study has found their natural habitats may have been replaced through agricultural intensification. ... > full story

People are cautious in asking help from their community, online gift exchange study finds (September 25, 2010) -- People are cautious in exchanging favors and items with other people in their community. Researchers, who studied an online gift exchange service, say that many people buy services because it does not occur to them that someone in their community could help them or they are too shy to ask for a favor. ... > full story

Taking a new look at old digs: Trampling animals may alter Stone Age sites (September 25, 2010) -- Stone Age tools discovered embedded in the ground could mislead archaeologists about a Prehistoric site's age. A new study on animal trampling found that water buffalo and goats significantly disturbed stone tools scattered on watery ground, says archaeologists. The animals pushed the tools as much as 21 centimeters deeper than originally positioned -- potentially altering a site's interpretation thousands of years, and suggesting archaeologists should reanalyze some previous discoveries. ... > full story

Cell division typically associated with cancer may also protect the liver from injury (September 25, 2010) -- Researchers have found that the liver, which is known to have a tremendous capacity for regeneration, also has an amazing degree of diversity. A better understanding of this process may reveal why some individuals are more susceptible to different forms of liver injury than others, which could lead to new therapies for the treatment of liver disease. ... > full story

How do you make the perfect sled dog? (September 25, 2010) -- Over the last few hundred years, Alaskan sled dogs have been bred to haul cargo over Arctic terrain and, more recently, for racing. Now, researchers have identified the contributions different breeds have made to the speed, endurance and work ethic of Alaskan sled dogs. ... > full story

Postoperative high blood sugar appears to be associated with surgical site infection (September 25, 2010) -- High blood glucose levels after surgery may be an important risk factor for infection at the surgical site in patients having general surgery, according to a new study. ... > full story

New 'light switch' chloride binder developed (September 25, 2010) -- Chemists have designed a molecule that binds chloride ions -- but can be conveniently compelled to release the ions in the presence of ultraviolet light. ... > full story

Moving closer to outdoor recreation not a recipe for being more physically active (September 25, 2010) -- A new study looking at the relationship between body mass index, or BMI, and neighborhood walkability, socioeconomic status, reasons for choosing their neighborhood and how physically active they were, fruit and vegetable intake and demographic information such as age, gender, job status and education, found those who chose to move to be closer to outdoor recreation weren't necessarily more active. ... > full story


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