日期：2012-12-11 The asteroid（小行星） collision widely thought to have killed the dinosaurs also led to extreme devastation among snake and lizard species, according to new research -- including the extinction of a newly identified lizard Yale and Harvard scientis... 阅读全文>>

日期：2012-12-11 Alternative means of controlling urban insect pests by using ultrasonic frequencies are available and marketed to the public. However, few of these devices have been demonstrated as being effective in repelling insect pests such as mosquitoes, cockr... 阅读全文>>

日期：2012-12-11 Vertebrates' transition to living on land, instead of only in water, represented a major event in the history of life. Now, researchers reporting in the December issue of the Cell Press journal Developmental Cell provide new evidence that the develo... 阅读全文>>

日期：2012-12-11 Onion and garlic waste from the food industry could be used to mop up hazardous heavy metals, including arsenic（砷） , cadmium（镉） , iron, lead, mercury and tin in contaminated materials, according to a research paper published in the Internation... 阅读全文>>

日期：2012-12-11 Renewable energy could fully power a large electric grid 99.9 percent of the time by 2030 at costs comparable to today's electricity expenses, according to new research by the University of Delaware and Delaware Technical Community College. A well-d... 阅读全文>>

日期：2012-12-11 Anyone unfortunate enough to encounter a porcupine's quills knows that once they go in, they are extremely difficult to remove. Researchers at MIT and Brigham and Women's Hospital now hope to exploit the porcupine（豪猪） quill's unique properties t... 阅读全文>>

日期：2012-12-11 Moving in with a boyfriend causes women to eat more unhealthily and put on weight. But the opposite is true for men, whose long-term health benefits when they move in with a female partner. Dieticians at Newcastle University said both partners try t... 阅读全文>>

日期：2012-12-10 Research has shown a decrease in levels of the isotope nitrogen-15 in core samples from Greenland ice starting around the time of the Industrial Revolution. The decrease has been attributed to a corresponding increase in nitrates associated with the... 阅读全文>>

日期：2012-12-10 It is well known that plant growth patterns are influenced by a variety of stimuli, gravity being one amongst many. On Earth plant roots exhibit characteristic behaviours called 'waving' and ' skewing（偏移） ', which were thought to be gravity-depe... 阅读全文>>

日期：2012-12-10 A new class of drugs reduced the risk of patients contracting a serious and often deadly side effect of lifesaving bone marrow transplant treatments, according to a study from researchers at the University of Michigan Comprehensive Cancer Center. Th... 阅读全文>>

日期：2012-12-10 It's well known how bacteria exposed to antibiotics for long periods will find ways to resist the drugs -- by quickly pumping them out of their cells, for instance, or modifying the compounds so they're no longer toxic. Now new research has uncovere... 阅读全文>>

日期：2012-12-10 Now most of the workers and public servants work from 9 am to 5 pm. Some of them even work from 8 am or 8:30 am to 5 pm. However, according to the global Internet survey done by the UK Sleep Council, the Mediterranean siesta was the right idea all a... 阅读全文>>

日期：2012-12-10 Sleep is very ancient. In the electroencephalographic（脑点图仪的） sense we share it with all the primates and almost all the other mammals and birds: it may extend back as far as the reptiles. There is some evidence that the two types of sleep, dr... 阅读全文>>

日期：2012-12-07 The catastrophic drought last year in the Horn of Africa affected millions of people but also caused the extremely late arrival into northern Europe of several migratory songbird species, a study published December 6 in Science shows. Details of the... 阅读全文>>

日期：2012-12-07 If nanoscience were television, we'd be in the 1950s. Although scientists can make and manipulate nanoscale objects with increasingly awesome control, they are limited to black-and-white imagery for examining those objects. Information about nanosca... 阅读全文>>

日期：2012-12-07 The ability to detect rotten food is so crucial for survival that even flies have a dedicated neural circuit to do just that, according to a study published on December 6th in the Cell Press journal Cell. The brain circuit allows flies to avoid feed... 阅读全文>>

日期：2012-12-07 Despite their modern-day diversity of language, lifestyle, and religion, Europe's widespread Romani population shares a common, if complex, past. It all began in northwestern India about 1,500 years ago, according to a study reported on December 6th... 阅读全文>>

日期：2012-12-05 Raising the retirement age to increase financial stability does not make men worse off psychologically in the long-run, according to a new study by Dr. Elizabeth Mokyr Horner, from the University of California, Berkeley in the US. Her work shows tha... 阅读全文>>

日期：2012-12-05 VTT Technical Research Centre of Finland has developed a technique to significantly improve the quality of bio-based plastic packaging. The new generation of bio-based plastic packaging is not only eco-friendly but also has several superior qualitie... 阅读全文>>

日期：2012-12-05 Researchers at the University of Iowa have documented an activity by infants that begins nearly from birth: They learn by taking inventory of the things they see. In a new paper, the psychologists contend that infants create knowledge by looking at... 阅读全文>>