日期：2011-09-02 McMaster researchers have found one more reason to exercise: working out triggers influential stem cells to become bone instead of fat, improving overall health by boosting the body's capacity to make blood. The body's mesenchymal（间叶细胞的） stem... 阅读全文>>

日期：2011-09-02 Understanding the flow and processing of carbon in the world's oceans, which cover 70 percent of Earth's surface, is central to understanding global climate cycles, with many questions remaining unanswered. Between 200 and 1,000 meters below the oce... 阅读全文>>

日期：2011-09-02 Facial expressions have been called the universal language of emotion, but people from different cultures perceive happy, sad or angry facial expressions in unique ways, according to new research published by the American Psychological Association.... 阅读全文>>

日期：2011-09-01 Australia's iconic thylacine（袋狼） , or Tasmanian tiger, was hunted to death in the early Twentieth century for allegedly killing sheep; however, a new study published in the Zoological Society of London's Journal of Zoology has found that the tig... 阅读全文>>

日期：2011-09-01 Australia's iconic thylacine（袋狼） , or Tasmanian tiger, was hunted to death in the early Twentieth century for allegedly killing sheep; however, a new study published in the Zoological Society of London's Journal of Zoology has found that the tig... 阅读全文>>

日期：2011-09-01 Solar power is not all sunshine. It has a dark side -- particularly in developing countries, according to a new study by a University of Tennessee, Knoxville, engineering professor. A study by Chris Cherry, assistant professor in civil and environme... 阅读全文>>

日期：2011-09-01 A new study suggests that Homo erectus（直立人） , a precursor（先驱） to modern humans, was using advanced toolmaking methods in East Africa 1.8 million years ago, at least 300,000 years earlier than previously thought. The study, recently publishe... 阅读全文>>

日期：2011-08-31 High levels of chocolate consumption might be associated with a one third reduction in the risk of developing heart disease, suggests a study published online in the British Medical Journal. The findings confirm results of existing studies that gene... 阅读全文>>

日期：2011-08-31 Relationships between mothers and their sons change during childhood and adolescence. However, not all relationships change in the same way, and how the relationships change may affect boys' behavior when they become teens. Those are the findings of... 阅读全文>>

日期：2011-08-31 Writing in the journal Nature Communications, a collaboration between the Universities of Manchester and Cambridge, which includes Nobel Prize winning scientists Professor Andre Geim and Professor Kostya Novoselov, has discovered a crucial recipe fo... 阅读全文>>

日期：2011-08-31 New research from MIT suggests that there are parts of our brain dedicated to language and only language, a finding that marks a major advance in the search for brain regions specialized for sophisticated mental functions. Functional specificity, as... 阅读全文>>

日期：2011-08-30 While most research into video games and aggressive behavior has focused on violent games, competitiveness may be the main video game characteristic that influences aggression, according to new research published by the American Psychological Associ... 阅读全文>>

日期：2011-08-30 Pre-existing heart disease is rarely a contraindication（禁忌症） to pregnancy -- indeed, many women with heart disorders tolerate pregnancy well -- but it remains a major concern that complications are frequent and in some cases may be life-threate... 阅读全文>>

日期：2011-08-30 Reduced slow wave sleep (SWS) is a powerful predictor for developing high blood pressure in older men, according to new research in Hypertension: Journal of the American Heart Association. SWS, one of the deeper stages of sleep, is characterized by... 阅读全文>>

日期：2011-08-30 Researchers from Yale University are looking to a virus from the same family as the rabies（狂犬病） virus to fight a form of cancer primarily found in children and young adults. They report their findings in the September 2011 issue of the Journal... 阅读全文>>

日期：2011-08-28 Babies and toddlers with congenital（先天的） heart disease are at an increased risk of having harmful toxins in their blood, particularly following surgery, according to research by a team at Imperial College London. The study, published August 26... 阅读全文>>

日期：2011-08-28 Children in low and middle income countries should be given vitamin A supplements to prevent death and illness, concludes a study published online in the British Medical Journal. The researchers argue that the effectiveness of vitamin A supplementat... 阅读全文>>

日期：2011-08-28 It has long been known that hereditary factors（遗传因素） play a role in coronary（冠状的） heart disease. However, it has been unclear whether the increased risk is transferred through the genes or through an unhealthy lifestyle in the family. A n... 阅读全文>>

日期：2011-08-28 Current estimates of the impact of chemotherapy（化学疗法） on women's reproductive health are too low, according to a University of California, San Francisco (UCSF) study. The researchers say their analysis of the age-specific, long-term effects of... 阅读全文>>

日期：2011-08-28 For the first time, scientists can see pathways to stop a deadly brain cancer in its tracks. Researchers at Case Western Reserve University School of Medicine have imaged individual cancer cells and the routes they travel as the tumor spreads. The r... 阅读全文>>