ScienceDaily Top Science Headlines
for Saturday, August 13, 2011
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Arctic ice melt could pause for several years, then resume again (August 12, 2011) -- Although Arctic sea ice appears fated to melt as the climate continues to warm, the ice may temporarily stabilize or somewhat expand at times over the next few decades, new research indicates. ... > full story
Lasers stimulate stem cells and reduce heart scarring after heart attack, study suggests (August 12, 2011) -- New research shows that "shining" bone marrow stem cells with a laser encourages these cells to migrate to the heart to facilitate the healing process. If applied to these cells a few hours after a heart attack, the scarring that weakens the heart muscle can be reduced by up to 80 percent. ... > full story
NASA's asteroid photographer beams back science data (August 12, 2011) -- The Dawn spacecraft has completed a graceful spiral into the first of four planned science orbits during the spacecraft's yearlong visit to Vesta. The spacecraft started taking detailed observations on Aug. 11 at 9:13 a.m. PDT (12:13 a.m. EDT), which marks the official start of the first science-collecting orbit phase at Vesta, also known as the survey orbit. ... > full story
Drug development in the blink of an eye (August 12, 2011) -- The development of drugs for brain-related conditions is not an efficient process. A key reason for this is a lack of preclinical tests that accurately predict drug efficacy and detect unwanted side effects. But now, researchers have developed a new preclinical approach that they hope can be used alongside current strategies to guide more efficient drug development for brain-related conditions. ... > full story
New anti-censorship scheme could make it impossible to block individual Web sites (August 12, 2011) -- A radical new approach to thwarting Internet censorship would essentially turn the whole Web into a proxy server, making it virtually impossible for a censoring government to block individual Web sites. ... > full story
Possible therapeutic target for depression and addiction identified (August 12, 2011) -- Researchers have identified an important part of the pathway through which stress affects mood and motivation for drugs. The finding may prove useful in humans by providing new potential targets for drugs to treat problems related to stress. ... > full story
Darkest known exoplanet: Alien world is blacker than coal (August 12, 2011) -- Astronomers have discovered the darkest known exoplanet -- a distant, Jupiter-sized gas giant known as TrES-2b. Their measurements show that TrES-2b reflects less than one percent of the sunlight falling on it, making it blacker than coal or any planet or moon in our solar system. ... > full story
Low vitamin D linked to earlier first menstruation (August 12, 2011) -- A study links low vitamin D in young girls with early menstruation, which is a risk factor for a host of health problems for teen girls as well as women later in life. ... > full story
Rats control appetite for poison: How rodents survive arms race with toxic plants they eat (August 12, 2011) -- Life is tough for woodrats in deserts of the US Southwest. There are few plants for food, and those plants produce poison to deter rodents, insects and other animals. A new study shows how certain woodrats put themselves on a diet to avoid poisoning: They sample a smorgasbord of toxic plants, eat smaller meals, increase time between meals and drink more water if it is available. ... > full story
Human-cell-derived model of amyotrophic lateral sclerosis provides a new way to study the majority of cases (August 12, 2011) -- For decades, scientists have studied a laboratory mouse model that develops signs of the paralyzing disease amyotrophic lateral sclerosis (ALS) as they age. Researchers have now developed a new model of ALS, one that mimics sporadic ALS, which represents about 90 percent of all cases. ... > full story
Bilayer graphene: Another step towards graphene electronics (August 12, 2011) -- The Nobel Prize winning scientists Professor Andre Geim and Professor Kostya Novoselov have taken a huge step forward in studying the wonder material graphene and revealing its exciting electronic properties for future electronic applications. ... > full story
Resistance training can help smokers kick the habit, according to study (August 12, 2011) -- Resistance training, or weight lifting, can do more than just build muscle: it may also help smokers kick the habit, say researchers. ... > full story
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