日期：2011-07-19 Oncogenes（致癌基因） are generally thought to be genes that, when mutated, change healthy cells into cancerous tumor cells. Scientists at the Keck School of Medicine of the University of Southern California (USC) have proven that those genes also c... 阅读全文>>

日期：2011-07-15 More than 500,000 tonnes of onion waste are thrown away in the European Union each year. However, scientists say this could have a use as food ingredients（食品添加剂） . The brown skin and external layers are rich in fibre and flavonoids（黄酮类）... 阅读全文>>

日期：2011-07-15 Whether we choose to accept or fight it, the fact is that we will all age, but will we do so successfully? Aging successfully has been linked with the positivity effect, a biased（有偏见的） tendency towards and preference for positive, emotionally... 阅读全文>>

日期：2011-07-15 Since the birth of the industrial revolution, ocean pH has dropped by 0.1 units. That might not sound like much until you realise that a 0.1 unit fall is a 30% increase in acidity. And, with predictions that ocean pH will continue plummeting（垂直落... 阅读全文>>

日期：2011-07-15 In 1997, the actress and singer Julie Andrews lost her singing voice following surgery to remove noncancerous lesions（损害） from her vocal cords. She came to Steven Zeitels, a professor of laryngeal（喉的） surgery at Harvard Medical School, for h... 阅读全文>>

日期：2011-07-15 The decline of large predators（捕食者） and other apex（顶点） consumers at the top of the food chain has disrupted ecosystems all over the planet, according to a review of recent findings conducted by an international team of scientists and publis... 阅读全文>>

日期：2011-07-14 At the heart of most, if not all, large galaxies lurks（潜伏） a supermassive black hole with a mass millions, or sometimes billions, times greater than that of the Sun. In many galaxies, including our own Milky Way, the central black hole is quiet.... 阅读全文>>

日期：2011-07-14 Scientists are reporting development of a new approach for producing large quantities of human- derived（导出的，衍生的） gelatin（明胶，动物胶） that could become a substitute for some of the 300,000 tons of animal-based gelatin produced annually f... 阅读全文>>

日期：2011-07-14 A new study by investigators from the University of North Carolina at Chapel Hill School of Medicine has confirmed the existence of a trial effect in clinical trials for treatment of HIV. Trial effect is an umbrella term for the benefit experienced... 阅读全文>>

日期：2011-07-14 The Wildlife Conservation Society has discovered a surprisingly healthy population of rare snow leopards living in the mountainous reaches of northeastern Afghanistan's Wakhan Corridor, according to a new study. The discovery gives hope to the world... 阅读全文>>

日期：2011-07-13 Computers are great at treating words as data: Word-processing programs let you rearrange and format text however you like, and search engines can quickly find a word anywhere on the Web. But what would it mean for a computer to actually understand... 阅读全文>>

日期：2011-07-13 An ultrasound test can tell if people with the human immunodeficiency virus (HIV) and heart disease are at risk of heart attack or death, according to new research reported in Circulation: Cardiovascular Imaging, an American Heart Association journa... 阅读全文>>

日期：2011-07-13 Mothers have been telling their children to stop slouching（没精打采地坐着） for ages. It turns out that mom was onto something and that poor posture（姿势，态度） not only makes a bad impression, but can actually make you physically weaker. Accordi... 阅读全文>>

日期：2011-07-13 A team of scientists has discovered the youngest dinosaur preserved in the fossil record before the catastrophic meteor（流星） impact 65 million years ago. The finding indicates that dinosaurs did not go extinct prior to the impact and provides fur... 阅读全文>>

日期：2011-07-13 In a large and comprehensive investigation into the underlying causes of sudden cardiac death (SCD) a surreptitious（秘密的） killer of hundreds of thousands annually in the United States researchers have discovered a variation in the genome's DNA s... 阅读全文>>

日期：2011-07-13 Current and proposed border fences pose significant threats to wildlife populations, with those animals living in border regions along the Texas Gulf and California coasts showing some of the greatest vulnerability, a new study from The University o... 阅读全文>>

日期：2011-07-13 Overall cancer mortality rates（死亡率） are higher for men than women in the United States, according to a study published in Cancer Epidemiology, Biomarkers Prevention, a journal of the American Association for Cancer Research. Michael B. Cook, Ph... 阅读全文>>

日期：2011-07-13 07/07/11, Clearwater Beach, FL. Research to be presented at the upcoming annual meeting of the Society for the Study of Ingestive Behavior (SSIB), the foremost（最重要的） society for research into all aspects of eating and drinking behavior, may ex... 阅读全文>>

日期：2011-07-12 Rapidly, but expressively and with amazing ease, the guitarist's fingers move over the strings on the neck of the instrument. His fingertips move up and down and a vibrato（颤音） resonates. From the guitar a cable leads to a laptop, which records t... 阅读全文>>

日期：2011-07-12 It's not just the words, but the sounds of words that have meaning for us. This is true for children and adults, who can associate the strictly auditory（听觉的） parts of language vowels produced in the front or the back of the mouth, high or low p... 阅读全文>>