日期:2013-06-06 Some 40 million years before rock singer Jim Morrison's lyrics earned him the moniker(绰号,名字) the Lizard King, an actual king lizard roamed the hot tropical forests of Southeast Asia, competing with mammals for food and other resources. A team... 阅读全文>> 日期:2013-06-06 If you had a time machine that could take you anywhere in the past, what time would you choose? Most people would probably pick the era of the dinosaurs in hopes of spotting a T. rex. But many astronomers would choose the period, four and a half bil... 阅读全文>> 日期:2013-06-06 An international team of paleontologists(古生物学者) that includes Northern Illinois University anthropologist Dan Gebo is announcing the discovery of a nearly complete, articulated skeleton of a new tiny, tree-dwelling primate dating back 55 mill... 阅读全文>> 日期:2013-06-05 The moth genus Monema is represented by medium-sized yellowish species. The genus belongs to the Limacodidae family also known as the slug moths due to the distinct resemblance of their caterpillars(毛毛虫) to some slug species. Some people know t... 阅读全文>> 日期:2013-06-05 Strawberry lovers rejoice: the days of unpacking your luscious(甘美的) berries from the refrigerator only to find them sprouting(发芽) wispy(纤细的) goatees of mold may be numbered. A research team from the U.S. Department of Agriculture's (US... 阅读全文>> 日期:2013-06-05 Catching the attention of female lizards in a darkened rainforest amid a blur of windblown vegetation is no easy task. But male Anolis lizards on the island of Jamaica have evolved an ideal visual technique -- very rapid extension and retraction of... 阅读全文>> 日期:2013-06-05 Researchers at the University of Adelaide have found that a lake on an island off the coast of Queensland, Australia, has been relatively untouched by changes in climate for the past 7000 years, and has so far also resisted the impact of humans. Blu... 阅读全文>> 日期:2013-06-05 Most apes eat leaves and fruits from trees and shrubs(灌木) . New studies spearheaded by the University of Utah show that human ancestors expanded their menu 3.5 million years ago, adding tropical grasses and sedges to an ape-like diet and setting... 阅读全文>> 日期:2013-06-05 The first amphibian(两栖动物) to have been officially declared extinct by the International Union for Conservation of Nature (IUCN) has been rediscovered in the north of Israel after some 60 years and turns out to be a unique living fossil, withou... 阅读全文>> 日期:2013-06-03 Acidifying oceans could dramatically impact the world's squid species, according to a new study led by Woods Hole Oceanographic Institution (WHOI) researchers and soon to be published in the journal PLOS ONE. Because squid are both ecologically and... 阅读全文>> 日期:2013-06-03 Through innovations to a printing process, researchers have made major improvements to organic electronics -- a technology in demand for lightweight, low-cost solar cells, flexible electronic displays and tiny sensors. The printing method is fast an... 阅读全文>> 日期:2013-06-03 The first few hours to days following exposure to human immunodeficiency virus (HIV) can be of critical importance in determining if infection occurs in a patient. But the low numbers of viruses and infected cells at this stage makes it very difficu... 阅读全文>> 日期:2013-06-03 With so much on the line(处于危险中) for job seekers in this difficult economic climate, a lot of new hires might be wondering how -- or whether at all -- to negotiate salary when offered a new position. A recently published study on the art of ne... 阅读全文>> 日期:2013-06-02 All chefs know that you have to break some eggs to make an omelet(煎蛋卷) , and that includes engineers at Iowa State University who are using high-frequency sound waves to break down plant materials in order to cook up a better batch of biofuel.... 阅读全文>> 日期:2013-06-02 Don't let low grades haunt(出没,作祟) your students. A new study in the Journal of Animal Science shows that performance in foundational biology courses is a strong predictor of performance in high-level animal science courses. In a study of 1,51... 阅读全文>> 日期:2013-06-02 In a new study, published in Science, Columbia Engineering researchers demonstrate that graphene, even if stitched together from many small crystalline grains, is almost as strong as graphene in its perfect crystalline form. This work resolves a con... 阅读全文>> 日期:2013-06-02 美国的研究人员表示,久坐会导致循环不畅及各类疼痛,同时增加患心脏病和糖尿病的几率。研究人员指出,人在坐着的时候消耗的能量较少,换句话说就是,久坐会长肉! Prolonged sitting is not what nature intended for us, says Dr. Camelia Davtyan, clinical profess... 阅读全文>> 日期:2013-05-31 Chlorofluorocarbons (CFCs) are to blame for global warming since the 1970s and not carbon dioxide, according to a researcher from the University of Waterloo in a controversial new study published in the International Journal of Modern Physics B this... 阅读全文>> 日期:2013-05-31 Through careful study of an ancient ancestor of modern turtles, researchers now have a clearer picture of how the turtles' most unusual shell came to be. The findings, reported on May 30 in Current Biology, a Cell Press publication, help to fill a 3... 阅读全文>> 日期:2013-05-31 Stanford University scientists have developed an advanced zinc-air battery with higher catalytic activity and durability than similar batteries made with costly platinum(铂) and iridium(铱) catalysts. The results, published in the May 7 online e... 阅读全文>> |
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