日期：2012-12-05 A heart-healthy diet rich in fruits, vegetables and fish significantly reduces the chance of a second heart attack and stroke in people with cardiovascular disease, McMaster University researchers have found. A five-year study of almost 32,000 patie... 阅读全文>>

日期：2012-12-05 With fluctuating（波动的） gas prices and the increasing call for work-life balance, telecommuting has become an attractive option for busy professionals. Yet according to a new study from The University of Texas at Austin, for most employees who wo... 阅读全文>>

日期：2012-12-05 Buildings and statues constructed of limestone can be protected from pollution by applying a thin, single layer of a water-resistant coating, new research suggests. That's the word from a University of Iowa researcher and her colleagues from Cardiff... 阅读全文>>

日期：2012-12-05 The population of the United States is getting older, due not only to aging boomers but also to a four-year increase in life expectancy from 1990 to 2010. An aging population means increased diagnosis of prostate cancer. Statistically, the older the... 阅读全文>>

日期：2012-12-05 Think before you decide to skip your next meal. People often miss meals because they get busy or are trying to lose weight. But how you skip meals, and the amount you eat at your next meal, can affect your overall health. The scientific data on skip... 阅读全文>>

日期：2012-12-05 Working long hours can greatly increase the risk of suffering injury or illness, a study says. Workers who do overtime were 61% more likely to become hurt or ill, once factors such as age and gender were taken into account. And working more than 12... 阅读全文>>

日期：2012-12-04 Probiotics（益生菌） like those found in yogurt are not only good for people -- they are also good for fish. A new study by scientists at the Institute of Marine and Environmental Technology found that feeding probiotics to baby zebrafish accelerate... 阅读全文>>

日期：2012-12-04 Scattered around the Milky Way are stars that resemble（类似） our own sun -- but a new study is finding that any planets orbiting those stars may very well be hotter and more dynamic than Earth. That's because the interiors of any terrestrial plane... 阅读全文>>

日期：2012-12-04 In new research published in a special issue of the journal Environmental Health Perspectives and in Sources to Seafood: Mercury Pollution in the Marine Environment -- a companion report by the Dartmouth-led Coastal and Marine Mercury Ecosystem Rese... 阅读全文>>

日期：2012-12-04 University of Florida scientists have co-authored a study describing a new Lepidoptera species found in Jamaica's last remaining wilderness. Belonging to the family of skipper butterflies, the new genus and species is the first butterfly discovered... 阅读全文>>

日期：2012-12-04 Plants grow upward from a tip of undifferentiated tissue called the shoot apical（顶上的） meristem（分生组织） . As the tip extends, stem cells at the center of the meristem divide and increase in numbers. But the cells on the periphery（外围，边缘... 阅读全文>>

日期：2012-12-04 Say goodbye to that annoying buzz created by overhead fluorescent light（荧光灯） bulbs in your office. Scientists at Wake Forest University have developed a flicker-free, shatterproof alternative for large-scale lighting. The lighting, based on fie... 阅读全文>>

日期：2012-12-04 Short people should pray for a return to the Seventies fashion of stack heels, for the power of jealousy depends on how tall you are, the British weekly New Scientist says. Researchers at the University of Groningen in the Netherlands and University... 阅读全文>>

日期：2012-12-03 Homicide（杀人） moves through a city in a process similar to infectious disease, according to a new study that may give police a new tool in tracking and ultimately preventing murders. Using Newark, N.J., as a pilot case, a team of Michigan State U... 阅读全文>>

日期：2012-12-03 Rates of childhood obesity have tripled in the past 30 years, and food marketing has been implicated as one factor contributing to this trend. Every year, companies spend more than $10 billion in the US marketing their food and beverages to children... 阅读全文>>

日期：2012-12-03 One reason that biofuels are expensive to make is that the organisms used to ferment（发酵） the biomass cannot make effective use of hemicellulose（半纤维素） , the next most abundant cell wall component after cellulose. They convert only the gluco... 阅读全文>>

日期：2012-12-03 Paternal recognition -- being able to identify males from your father's line -- is important for the avoidance of inbreeding（近亲交配） , and one way that mammals can do this is through recognizing the calls of paternal kin. This was thought to occ... 阅读全文>>

日期：2012-12-03 An analysis of mineral grains from the bottom of the western Grand Canyon indicates it was largely carved out by about 70 million years ago -- a time when dinosaurs were around and may have even peeked over the rim, says a study led by the Universit... 阅读全文>>

日期：2012-12-03 Bulk solvents, widely used in the chemical industry, pose a serious threat to human health and the environment. As a result, there is growing interest in avoiding their use by relying on mechanochemistry（机械化学） -- an energy-efficient alternativ... 阅读全文>>

日期：2012-12-03 If you struggled to get up for work on Wednesdays, there could be a good reason--it is the day our mood reaches its lowest point. Psychologists have found that, on average, people's moods remain about the same on each day throughout the week. Monday... 阅读全文>>