日期：2010-02-25 Children can have strokes, and the strokes can recur（重现，再来） , usually within a month, according to pediatric（小儿科的） researchers. Unfortunately, the strokes often go unrecognized the first time, and the child does not receive treatment be... 阅读全文>>

日期：2010-02-24 Knowing the stage of a patient's melanoma（黑素瘤，胎记瘤） is important when choosing the best course of treatment. When the cancer has progressed to the lymph nodes（淋巴结） , a more aggressive treatment is needed. Examining an entire lymph node... 阅读全文>>

日期：2010-02-24 Biologists affiliated with（交往） the American Museum of Natural History and City College of the City University of New York have found that grizzly（灰色的） bears are roaming（闲逛，漫步） into what was traditionally thought of as polar bear habi... 阅读全文>>

日期：2010-02-24 Researchers have found a new oncogenic（致瘤的） signaling pathway by which the environmental toxin（毒素，毒质） arsenic（砒霜，砷） may lead to adverse（不利的，相反的） health effects, including bladder（膀胱） cancer. These study results are pub... 阅读全文>>

日期：2010-02-24 A team of paleontologists（古生物学者） has discovered a new dinosaur species they're calling Abydosaurus, which belongs to the group of gigantic, long-necked, long-tailed, four-legged, plant-eating dinosaurs such as Brachiosaurus（腕龙） . In a rar... 阅读全文>>

日期：2010-02-23 Genetic interactions（相互作用） between avian（鸟类的） H5N1 influenza and human seasonal influenza viruses have the potential to create hybrid（杂种的，混合的） strains combining the virulence（毒性） of bird flu with the pandemic（流行的，普遍的... 阅读全文>>

日期：2010-02-23 A five-person team sent to evaluate（鉴定，评估） damage from the devastating magnitude-7 earthquake that struck Haiti on Jan. 12 found no surface evidence of the fault that might have caused the quake, but installed four instruments to measure afte... 阅读全文>>

日期：2010-02-23 A new strain of mosquitoes in which females cannot fly may help curb the transmission of dengue fever（登革热） , according to UC Irvine and British scientists. Dengue fever causes severe flulike symptoms（症状） and is among the world's most pressi... 阅读全文>>

日期：2010-02-22 Cultural views of evolution can have important ethical（道德的，伦理的） implications, says a Duke University expert on theological（神学的） and biomedical（生物医学的） ethics. Because the popular imagination filters science through cultural assum... 阅读全文>>

日期：2010-02-22 More than three million children have been born as a result of assisted reproductive technologies（辅助生育技术） since the birth of the first test tube baby in 1978. While the majority of these children are healthy and normal, as a group they are a... 阅读全文>>

日期：2010-02-22 Anyone who grew up in a large family likely remembers hearing Don't wake the baby. While it reinforces the message to older kids to keep it down, research shows that sleep also is an important part of how infants learn more about their new world. Re... 阅读全文>>

日期：2010-02-22 For nearly half a century, scientists have been trying to figure out how to build a cost-effective and reasonably sized X-ray laser that could, among other things, provide super high- resolution（分辨率） imaging. And for the past two decades, Unive... 阅读全文>>

日期：2010-02-21 Scientists know little about how the brain creates and controls emotions an uncertainty that presents a major obstacle in the effort to develop treatments for emotional disorders. The study of the brain science of emotion is in its infancy, says How... 阅读全文>>

日期：2010-02-21 Scientists are reporting the first-ever data to show that the enzyme（酶） calcineurin（磷酸酶） is critical in controlling normal development and function of heart cells, and that loss of the protein leads to heart problems and death in genetically... 阅读全文>>

日期：2010-02-20 A cocktail of compounds emitted by the beneficial fungus（真菌） Muscodor albus may offer a biologically based way to fumigate（熏蒸） certain crops and rid them of destructive pests. That's the indication from Agricultural Research Service ( ARS农... 阅读全文>>

日期：2010-02-20 Consumers need faster, more efficient ways of being notified when there is a recall of food products. That's the message Michigan State University's Ewen Todd gave to a symposium（座谈会） at the 2010 American Association for the Advancement of Scie... 阅读全文>>

日期：2010-02-20 An international team of scientists, including two from Arizona State University, have taken a significant step closer to unlocking the secrets of photosynthesis（光合作用） , and possibly to cleaner fuels. Plants and algae（海藻） , as well as cyan... 阅读全文>>

日期：2010-02-20 NASA satellites monitoring and studying Cyclone Gelane over the last several days have watched the storm become more powerful and more compact. Gelane is now a powerful category four cyclone on the Saffir-Simpson scale. Some regional warnings have b... 阅读全文>>

日期：2010-02-20 A new paper by researchers at George Mason University and the University of Otago in New Zealand shows a strong link between the diversity of organisms at the bottom of the food chain（食物链） and the diversity of mammals（哺乳类） at the top. Mark... 阅读全文>>

日期：2010-02-20 Tiny bits of molecular（分子的） trash found in circulating blood appear to be good predictors（预报器，预言者） of cardiovascular disease（心血管疾病） and untimely death, say researchers at Duke University Medical Center. The discovery, published... 阅读全文>>