ScienceDaily Top Science Headlines
for Saturday, August 28, 2010
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Distant star's sound waves reveal cycle similar to the sun's (August 27, 2010) -- In a bid to unlock longstanding mysteries of the sun, including the impacts on Earth of its 11-year cycle, an international team of scientists has successfully probed a distant star. By monitoring the star's sound waves, the team has observed a magnetic cycle analogous to the sun's solar cycle. ... > full story
Baby's first full diaper can reveal mother's smoking (August 27, 2010) -- Meconium, the dark and tarry stools passed by a baby during the first few days after birth, can be used to determine how much the mother smoked, or if she was exposed to tobacco smoke during pregnancy. Researchers measured tobacco smoke metabolites in meconium samples from 337 babies, finding that they correlated well with reported smoke exposure and other markers of tobacco smoke exposure. ... > full story
Black rice rivals pricey blueberries as source of healthful antioxidants (August 27, 2010) -- Health conscious consumers who hesitate at the price of fresh blueberries and blackberries, fruits renowned for high levels of healthful antioxidants, now have an economical alternative. It is black rice, one variety of which got the moniker "forbidden rice" in ancient China because nobles commandeered every grain for themselves and forbade the common people from eating it. ... > full story
Rectal cancer rates are rising in young individuals, analysis finds (August 27, 2010) -- A new analysis has found that while colon cancer rates have remained steady over the past several decades among people under the age of 40, rectal cancer rates are increasing in this population across races and in both sexes. ... > full story
New model to help organize, keep private 'vast ocean' of social network data (August 27, 2010) -- Researchers have developed a new model to manage the "vast ocean" of user-generated content being generated by the ever-growing social networking sites including Facebook and Twitter. ... > full story
Autism and schizophrenia: Family history may not always be a good indicator (August 27, 2010) -- Family history may not be a good predictor of the presence of mutations predisposing to autism or schizophrenia, a new study suggests. The findings show how new or de novo gene mutations -- alterations of the cell's DNA -- play a role in these devastating conditions. ... > full story
Shrinking atmospheric layer linked to low levels of solar radiation (August 27, 2010) -- Scientists link a recent, temporary shrinking of a high atmospheric layer with a sharp drop in the sun's ultraviolet radiation levels. ... > full story
Moms who don't breastfeed more likely to develop type 2 diabetes, study finds (August 27, 2010) -- Mothers who did not breastfeed their children have significantly higher rates of type 2 diabetes later in life than moms who breastfed, a new study finds. Twenty-seven percent of mothers who did not breastfeed developed type 2 diabetes and were almost twice as likely to develop the disease as women who had breastfed or never given birth. ... > full story
Grapefruit's bitter taste holds a sweet promise for diabetes therapy (August 27, 2010) -- A new study demonstrates the mechanism by which a single grapefruit compound controls fat and glucose metabolism, replacing multiple drugs. ... > full story
Vaccine has cut child cases of bacterial pneumonia, says study (August 27, 2010) -- The number of children admitted to English hospitals with bacterial pneumonia decreased by a fifth in the two years following the introduction of a vaccine to combat the disease, according to a new study. ... > full story
Lethal backfire: Green odor with fatal consequences for voracious caterpillars (August 27, 2010) -- During field studies, scientists discovered that the oral secretions of tobacco hornworm larvae contain a particular substance that promptly alters a green leaf volatile in tobacco leaves into an odor attractant signal. With this signal, called (E)-2-hexenal, they unintentionally lure their own enemies: carnivorous bugs. These bugs start their piercing attacks not only against freshly hatched caterpillar babies; they also devour eggs laid by the female moths. ... > full story
Experimental treatments for cocaine addiction may prevent relapse (August 27, 2010) -- The drug disulfiram, used for years to deter recovering alcoholics from drinking, also can treat cocaine addiction. Disulfiram prevents rats from seeking cocaine after a break, a model for addicts tempted to relapse. Disulfiram appears to work by inhibiting the enzyme dopamine beta-hydroxylase, which is required for the production of the neurotransmitter norepinephrine. A selective inhibitor of that enzyme, nepicastat, is also effective in the same model of cocaine relapse. ... > full story
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