ScienceDaily Top Science Headlines
for Saturday, November 6, 2010
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New statistical model moves human evolution back three million years (November 5, 2010) -- Evolutionary divergence of humans from chimpanzees likely occurred some 8 million years ago rather than the 5 million year estimate widely accepted by scientists, a new statistical model suggests. ... > full story
Nanoshells provide golden 'touch' in killing breast tumors (November 5, 2010) -- Using tiny gold "nanoshells" to deliver just a little heat to breast tumor cells already treated with radiation boosts the killing potential of the treatment -- not just shrinking the tumor but killing the cancer stem cells, said researchers. ... > full story
Junior ice hockey study uncovers alarming concussion rates (November 5, 2010) -- A study on Canadian junior ice hockey uncovers alarming head injury/concussion data and trends that raise many questions about the safety and well being of teenagers and young adults who participate in this popular sport. ... > full story
Wayward DNA-repair enzyme implicated in Friedreich's ataxia (November 5, 2010) -- Scientists have taken a step closer to understanding the cause of Friedreich's ataxia, a debilitating neurological condition that affects tens of thousands of people worldwide, and so far has no cure. ... > full story
New fish feeds made from fish byproducts (November 5, 2010) -- Fish byproducts may be a new source of fish feed. The scientists are taking fish parts that would normally be discarded-head, tail, bone, skin and internal organs-and fashioning them into feeds for shrimp and fish. ... > full story
Parents' effort key to child's educational performance (November 5, 2010) -- Parents' efforts towards their child's educational achievement is crucial -- playing a more significant role than that of the school or child, new research shows. ... > full story
Hard work improves the taste of food, study shows (November 5, 2010) -- It's commonly accepted that we appreciate something more if we have to work hard to get it, and a new study bears that out, at least when it comes to food. The study seems to suggest that hard work can even enhance our appreciation for fare we might not favor, such as the low-fat, low calorie variety. ... > full story
Extreme form of pregnancy-related morning sickness could be genetic (November 5, 2010) -- Research that traced both the maternal and paternal family histories of women with hyperemesis gravidarum -- an extreme form of pregnancy-related morning sickness that hospitalizes 60,000 pregnant women each year -- suggests not only that the condition could be genetic but that women with sisters who had HG could have a more than 17-fold risk of experiencing the debilitating condition too. ... > full story
Insects learn to choose the right mate (November 5, 2010) -- Researchers have shown that damselflies learn how to choose the right mate when two species co-exist locally. The choice of mate is not only a matter of genetic and instinctive behavior, as has often been assumed for such small and short-lived creatures. ... > full story
Small protein changes may make big difference in natural HIV control (November 5, 2010) -- Tiny variants in a protein that alerts the immune system to the presence of infection may underlie the rare ability of some individuals to control HIV infection without the need for medications. An international research team has found that differences in five amino acids in a protein called HLA-B are associated with whether or not HIV-infected individuals can control viral levels with their immune system only. ... > full story
Air pollution exposure increases risk of severe COPD (November 5, 2010) -- Long term exposure to low-level air pollution may increase the risk of severe chronic obstructive pulmonary disease, according to researcher s in Denmark. While acute exposure of several days to high level air pollution was known to be a risk factor for exacerbation in pre-existing COPD, until now there had been no studies linking long-term air pollution exposure to the development or progression of the disease. ... > full story
Headgear, mouth guards have little or no impact on reducing concussions in rugby players, study finds (November 5, 2010) -- Existing headgear and mouth guards have limited or no benefit in reducing concussions in rugby players, according to a Canadian neurosurgeon. ... > full story
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