日期：2013-03-07 Detection of midwall fibrosis（纤维化） (the presence of scar tissue in the middle of the heart muscle wall) via magnetic resonance imaging among patients with nonischemic dilated cardiomyopathy（扩张型心肌病） (a condition affecting the heart muscl... 阅读全文>>

日期：2013-03-07 A survey of bat activity in burned and unburned areas after a major wildfire in the southern Sierra Nevada mountains found no evidence of detrimental（有害的） effects on bats one year after the fire. The findings suggest that bats are resilient to... 阅读全文>>

日期：2013-03-07 A new report concludes that nearly half of Africa's wild lion populations may decline to near extinction over the next 20-40 years without urgent conservation measures. The plight of many lion populations is so bleak（阴冷的，荒凉的） , the report c... 阅读全文>>

日期：2013-03-06 New theoretical modeling by Carnegie's Alan Boss provides clues to how the gas giant planets in our solar system -- Jupiter and Saturn -- might have formed and evolved. His work was published recently by the Astrophysical Journal. New stars are surr... 阅读全文>>

日期：2013-03-06 Marriage may not always be as beneficial to health as experts have led us to believe, according to a new study. Researchers made two discoveries that explain why: First, marriage provides less protection against mortality as health deteriorates（恶... 阅读全文>>

日期：2013-03-06 Isolation of DNA from some organisms is a routine procedure. For example, you can buy a kit at your local pharmacy or grocery store that allows you to swab（打扫，擦拭） the inside of your cheek and send the sample for DNA sequencing. However, for o... 阅读全文>>

日期：2013-03-06 University of Florida paleontologists（古生物学者） have discovered remarkably well-preserved fossils of two crocodilians（鳄目动物） and a mammal previously unknown to science during recent Panama Canal excavations that began in 2009. The two new a... 阅读全文>>

日期：2013-03-06 A research team led by the Canadian Museum of Nature has identified the first evidence for an extinct giant camel in Canada's High Arctic. The discovery is based on 30 fossil fragments of a leg bone found on Ellesmere Island, Nunavut and represents... 阅读全文>>

日期：2013-03-05 Since the mid-1800s, doctors have used drugs to induce general anesthesia（全身麻醉） in patients undergoing surgery. Despite their widespread use, little is known about how these drugs create such a profound loss of consciousness. In a new study th... 阅读全文>>

日期：2013-03-05 An international group of researchers has discovered seven new regions of the human genome -- called loci-that are associated with increased risk of age-related macular degeneration（黄斑变性） (AMD), a leading cause of blindness. The AMD Gene Conso... 阅读全文>>

日期：2013-03-05 A team of scientists and clinicians at UC San Francisco has discovered how to detect abnormal brain rhythms associated with Parkinson's by implanting electrodes within the brains of people with the disease. The work may lead to developing the next g... 阅读全文>>

日期：2013-03-05 Shipping lanes through the Arctic Ocean won't put the Suez and Panama canals out of business anytime soon, but global warming will make these frigid（寒冷的） routes much more accessible than ever imagined by melting an unprecedented amount of sea i... 阅读全文>>

日期：2013-03-05 African forest elephants are being poached out of existence. A study just published in the online journal PLOS ONE shows that across their range in central Africa, a staggering（蹒跚的，令人惊愕的） 62 percent of all forest elephants have been kille... 阅读全文>>

日期：2013-03-04 Research now reveals that fish can migrate to avoid the threat of being eaten. A new study from Lund University in Sweden shows that roach（蟑螂，斜齿鳊） fish leave lakes and move into surrounding streams or wetlands, where they are safer from pred... 阅读全文>>

日期：2013-03-04 When Jim Thomas and his global team of researchers returned to the Madang Lagoon in Papua New Guinea, they discovered a treasure trove of new species unknown to science. This is especially relevant as the research team consisted of scientists who ha... 阅读全文>>

日期：2013-03-04 A new University of Iowa study confirms what many women have long suspected -- that pregnancy permanently changes the size and shape of a woman's feet. Flat feet are a common problem for pregnant women. The arch（拱形） of the foot flattens out, pos... 阅读全文>>

日期：2013-03-01 A new model suggests that inhospitable hydrodgen-sulphide rich waters could have delayed the spread of complex life forms in ancient oceans. The research, published online this week in the journal Nature Communications, considers the composition of... 阅读全文>>

日期：2013-03-01 Mineral evolution is a new way to look at our planet's history. It's the study of the increasing diversity and characteristics of Earth's near-surface minerals, from the dozen that arrived on interstellar（星际的） dust particles when the Solar Syst... 阅读全文>>

日期：2013-03-01 The Democratic Republic of Congo's (DRC) largest remaining forest elephant population, located in the Okapi Faunal Reserve (OFR), has declined by 37 percent in the last five years, with only 1,700 elephants now remaining, according to wildlife surve... 阅读全文>>

日期：2013-03-01 Researchers studying aging in an endangered lemur（狐猴） known as the Milne-Edwards' sifaka report that in old age, females are the safer sex. After observing these animals for more than two decades in the wild in Madagascar, co-author Patricia Wri... 阅读全文>>