ScienceDaily Top Science Headlines
for Saturday, November 27, 2010
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Size of mammals exploded after dinosaur extinction, researchers confirm (November 26, 2010) -- Researchers have demonstrated that the extinction of dinosaurs 65 million years ago made way for mammals to get bigger -- about a thousand times bigger than they had been, as well as confirming the dramatic growth in mammalian size after the dinosaurs. The study also showed that the ecosystem is able to reset itself relatively quickly. ... > full story
Growth-factor gel shows promise as hearing-loss treatment (November 26, 2010) -- A new treatment has been developed for sudden sensorineural hearing loss, a condition that causes deafness in 40,000 Americans each year, usually in early middle-age. Researchers describe the positive results of a preliminary trial of insulin-like growth factor 1, applied as a topical gel. ... > full story
Female fish -- and humans? -- lose interest when their male loses a slugfest (November 26, 2010) -- If you see your special someone lose a competition, your subconscious may start whispering, "He's a loser," even as you insist your love is unaffected, according to researchers studying African cichlid fish. When female cichlids saw a favored suitor lose a fight with another male, the females showed marked changes in relatively primitive parts of their brains. Humans have those same primitive brain areas, suggesting we may subconsciously react in much the same way. ... > full story
Weather affects children's injury rate: Each 5-degree temperature rise boosts kids' hospital admissions for serious injury by 10 percent (November 26, 2010) -- Every 5 degree Celsius rise in maximum temperature pushes up the rate of hospital admissions for serious injuries among children, reveals one of the largest studies of its kind. ... > full story
Erythromycin A produced in E. coli for first time: Biosynthetic breakthrough paves way for other pharmaceuticals (November 26, 2010) -- For the first time, researchers have made the antibiotic erythromycin A, and two variants, using E. coli as the production host. This is a cost-effective way to make erythromycin A and new drugs to combat antibiotic resistant pathogens. The E. coli host also offers next-generation engineering opportunities for other products with complex biosynthetic pathways. ... > full story
Tightwads and spendthrifts: A Black Friday tradition (November 26, 2010) -- Every year about this time, on Black Friday, the day after Thanksgiving that traditionally begins the holiday shopping season, early-morning consumers stand in long lines eager to purchase some sought after prize. From the outside, it looks as if these holiday shoppers can't wait to plunk down their cash, but researchers say consumers often behave differently than they would ideally like to behave. ... > full story
A high-yield biomass alternative to petroleum for industrial chemicals (November 26, 2010) -- Chemical engineers report that they have developed a way to produce high-volume chemical feedstocks including benzene, toluene, xylenes and olefins from pyrolytic bio-oils, the cheapest liquid fuels available today derived from biomass. The new process could reduce or eliminate industry's reliance on fossil fuels to make industrial chemicals worth an estimated 0 billion annually. ... > full story
More protein, less refined starch important for dieting, large study shows (November 26, 2010) -- If you want to lose weight or avoid gaining weight, you should cut down on finely refined starch calories such as white bread and white rice and instead eat a diet that is high in proteins with more lean meat, low-fat dairy products and beans, large scale study suggests. ... > full story
New tool detects Ebola, Marburg quickly, easily (November 26, 2010) -- Researchers have developed a simple diagnostic tool that can quickly identify dangerous viruses like Ebola and Marburg. The biosensor, which is the size of a quarter and can detect viruses in a blood sample, could be used in developing nations, airports and other places where natural or man-made outbreaks could erupt. ... > full story
No link between mold growth and development of asthma and allergy, Scandinavian study finds (November 26, 2010) -- A recent study in Norway shows that there is no link between mold-spore concentrations in the indoor air and development of asthma and allergy among children. ... > full story
First evidence for magnetic field in protostar jet: Magnetism common to all cosmic jets? (November 26, 2010) -- Highly-sensitive observations with the Very Large Array show the first-ever evidence for a magnetic field in the jet of a young star. This gives such protostellar jets a common characteristic with jets from quasars and microquasars. ... > full story
Gender gap in physics exams reduced by simple writing exercises, study finds (November 26, 2010) -- Women are underrepresented and on average perform more poorly than men in introductory physics. But a recent study finds that this gap arises predominantly from differential preparation prior to college and psychological factors, rather than differences in ability. ... > full story
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