日期：2014-09-04 The Great Pacific Garbage Patch is an area of environmental concern between Hawaii and California where the ocean surface is marred by scattered pieces of plastic, which outweigh plankton in that part of the ocean and pose risks to fish, turtles and... 阅读全文>>

日期：2014-09-04 The brown marmorated stink bug (Halyomorpha halys) is an invasive, herbivorous insect species that was accidentally introduced to the United States from Asia. First discovered in Allentown, Pennsylvania in 1996, it has since been found in at least 4... 阅读全文>>

日期：2014-09-04 Magazines, television and other popular media increasingly urge families to return to the kitchen, stressing the importance of home-cooked meals and family dinners to physical health and family well-being. But new research findings from North Caroli... 阅读全文>>

日期：2014-09-04 Keeping upright in a low-gravity environment is not easy, and NASA documents abound with examples of astronauts falling on the lunar surface. Now, a new study by an international team of researchers led by York University professors Laurence Harris... 阅读全文>>

日期：2014-09-04 For years, doctors have known that there is a link between childhood obesity and asthma, but have found it difficult to determine which condition tends to come first, or whether one causes the other. An article published in the September issue of An... 阅读全文>>

日期：2014-09-04 Astronomers using the National Science Foundation's Green Bank Telescope (GBT) -- among other telescopes -- have determined that our own Milky Way galaxy is part of a newly identified ginormous supercluster of galaxies, which they have dubbed Laniak... 阅读全文>>

日期：2014-09-03 Researchers at the University of California, San Diego have produced the first complete genome sequencing of a strain of E. coli that is a common cause of outbreaks of food poisoning in the United States. Although the E. coli strain EDL933 was first... 阅读全文>>

日期：2014-09-03 A new batteryless cardiac pacemaker based on an automatic wristwatch and powered by heart motion was presented at ESC Congress 2014 today by Adrian Zurbuchen from Switzerland. The prototype device does not require battery replacement. Mr Zurbuchen,... 阅读全文>>

日期：2014-09-03 When we learn, we associate a sensory experience either with other stimuli or with a certain type of behaviour. The neurons in the cerebral cortex that transmit the information modify the synaptic connections that they have with the other neurons. A... 阅读全文>>

日期：2014-09-03 In the quantum world, making the simple atom behave is one thing, but making the more complex molecule behave is another story. Now Northwestern University scientists have figured out an elegant way to stop a molecule from tumbling so that its poten... 阅读全文>>

日期：2014-09-03 With their long, spiky legs and their propensity（倾向，习性） for eating anything, including each other, camel crickets are the stuff of nightmares. And now research from North Carolina State University finds that non-native camel cricket species h... 阅读全文>>

日期：2014-09-02 'Green' offices with plants make staff happier and more productive than 'lean' designs stripped of greenery, new research shows. In the first field study of its kind, researchers found enriching a 'lean' office with plants could increase productivit... 阅读全文>>

日期：2014-09-02 Conventional wisdom has long held that corals -- whose calcium-carbonate skeletons form the foundation of coral reefs -- are passive organisms that rely entirely on ocean currents to deliver dissolved substances, such as nutrients and oxygen. But no... 阅读全文>>

日期：2014-09-02 A diet of junk food not only makes rats fat, but also reduces their appetite for novel foods, a preference that normally drives them to seek a balanced diet, reports a study published in the open-access journal Frontiers in Psychology. The study hel... 阅读全文>>

日期：2014-09-02 Glass has many applications that call for different properties, such as resistance to thermal shock or to chemically harsh environments. Glassmakers commonly use additives such as boron oxide to tweak these properties by changing the atomic structur... 阅读全文>>

日期：2014-09-02 Television shows filled with action and sound may be bad for your waistline. TV viewers ate more MMs, cookies, carrots and grapes while watching an excerpt（摘录，引用） from a Hollywood action film than those watching an interview program. Televisi... 阅读全文>>

日期：2014-09-01 Some species of marine phytoplankton（浮游植物） , such as the prolific bloomer Emiliania huxleyi, can grow without consuming vitamin B1 (thiamine), researchers have discovered. The finding contradicts the common view that E. huxleyi and many other... 阅读全文>>

日期：2014-09-01 For decades, researchers have used petri dishes（培养皿） to study cell movement. These classic tissue culture tools, however, only permit two-dimensional movement, very different from the three-dimensional movements that cells make in a human body.... 阅读全文>>

日期：2014-09-01 Stimulating a particular region in the brain via non-invasive delivery of electrical current using magnetic pulses, called Transcranial Magnetic Stimulation, improves memory, reports a new Northwestern Medicine study. The discovery opens a new field... 阅读全文>>

日期：2014-09-01 Water scarcity is not a problem just for the developing world. In California, legislators are currently proposing a $7.5 billion emergency water plan to their voters; and U.S. federal officials last year warned residents of Arizona and Nevada that t... 阅读全文>>