日期：2012-06-05 An interdisciplinary（各学科间的） team, led by researchers at Cornell University and the U.S. Department of Agriculture-Agricultural Research Service (USDA-ARS), have just published the most comprehensive analysis to date of the corn genome. The te... 阅读全文>>

日期：2012-06-05 A new cancer treatment that links chemotherapy with an agent that homes in on specific breast cancer cells was significantly better than the current drug regimen（养生法，政体） at keeping patients' advanced tumors from progressing, according to res... 阅读全文>>

日期：2012-06-05 Giant insects ruled the prehistoric（史前的） skies during periods when Earth's atmosphere was rich in oxygen. Then came the birds. After the evolution of birds about 150 million years ago, insects got smaller despite rising oxygen levels, according... 阅读全文>>

日期：2012-06-01 During formation of multi-cellular organisms, cells need to talk to each other to make critical decisions as to what kind of cell to become, as well as when and where to become that cell type. The Notch signaling system allows cells to directly talk... 阅读全文>>

日期：2012-06-01 Sure, sex may be fun, but it's a lot of work, and the payoff is by no means（绝不） certain. Scientists have speculated for a long time on why all living things don't simply make like amoebas and split. Now a biologist at Michigan Technological Univ... 阅读全文>>

日期：2012-06-01 Daily consumption of dark chocolate can reduce cardiovascular（心血管的） events, such as heart attacks and strokes, in people with metabolic（新陈代谢的） syndrome (a cluster of factors that increases the risk of developing heart disease and diabet... 阅读全文>>

日期：2012-05-31 There is nothing better than a ripe, red, homegrown tomato, and now researchers reporting online on May 24 in Current Biology, a Cell Press publication, have figured out just what it is that makes some of them so awfully good (and your average super... 阅读全文>>

日期：2012-05-31 In the growth of crystals, do nanoparticles act as artificial atoms forming molecular-type building blocks that can assemble into complex structures? This is the contention（争论） of a major but controversial theory to explain nanocrystal growth. A... 阅读全文>>

日期：2012-05-31 It took some 10 million years for Earth to recover from the greatest mass extinction of all time, latest research has revealed. Life was nearly wiped out 250 million years ago, with only 10 per cent of plants and animals surviving. It is currently m... 阅读全文>>

日期：2012-05-31 An international research team has manufactured a new protein that can combat deadly flu epidemics. The paper, featured on the cover of the current issue of Nature Biotechnology, demonstrates ways to use manufactured genes as antivirals, which disab... 阅读全文>>

日期：2012-05-27 Marine scientists studying life around deep-sea vents have discovered that some hardy species can survive the extreme change in pressure that occurs when a research submersible（能潜水的） rises to the surface. The team's findings, published in Cons... 阅读全文>>

日期：2012-05-27 When leatherback（棱皮龟） turtle hatchlings dig out of their nests buried in the sandy Playa Grande beach in northwest Costa Rica, they enter a world filled with dangers. This critically endangered species faces threats that include egg poaching an... 阅读全文>>

日期：2012-05-27 Molecules containing large chains of carbon and hydrogen--the building blocks of all life on Earth--have been the targets of missions to Mars from Viking to the present day. While these molecules have previously been found in meteorites（陨石） from... 阅读全文>>

日期：2012-05-27 Researchers reporting online on May 24 in the Cell Press journal Current Biology present the first evidence that areas closed to all fishing are helping to sustain valuable Australian fisheries. The international team of scientists applied a forensi... 阅读全文>>

日期：2012-05-27 A forensic（法院的，辩论的） approach that links changes deep below a volcano to signals at the surface is described by scientists from the University of Bristol in a paper published May 24 in Science. The research could ultimately help to predict f... 阅读全文>>

日期：2012-05-27 Scientists believe they've pinpointed the last crucial piece of the 80-year-old puzzle of how plants know when to flower. Determining the proper time to flower, important if a plant is to reproduce successfully, involves a sequence of molecular even... 阅读全文>>

日期：2012-05-24 The universe is a marvelously complex place, filled with galaxies and larger-scale structures that have evolved over its 13.7-billion-year history. Those began as small perturbations（扰动，不安） of matter that grew over time, like ripples in a pon... 阅读全文>>

日期：2012-05-24 Calcium supplements might increase the risk of having a heart attack, and should be taken with caution, concludes research published in the online issue of the journal Heart. Furthermore, boosting overall calcium intake from dietary sources confers... 阅读全文>>

日期：2012-05-24 Seagrasses are a vital part of the solution to climate change and, per unit area, seagrass meadows can store up to twice as much carbon as the world's temperate and tropical forests. So report researchers publishing a paper this week in the journal... 阅读全文>>

日期：2012-05-24 Scientists at the University of British Columbia and the Smithsonian Institution have discovered a sensory organ in rorqual（须鲸科） whales that coordinates its signature lunge-feeding behaviour -- and may help explain their enormous size. Rorquals... 阅读全文>>