日期：2016-03-29 Like most annuals, lettuce plants live out their lives in quiet, three-act dramas that follow the seasons. Seed dormancy gives way to germination; the young plant emerges and grows; and finally in the climax of flowering, a new generation of seeds i... 阅读全文>>

日期：2016-03-29 The formation of a distinct pattern of sea surface temperatures in the middle of the North Pacific Ocean can predict an increased chance of summer heat waves in the eastern half of the U.S. up to 50 days in advance. The pattern is a contrast of warm... 阅读全文>>

日期：2016-03-27 According to a recent study, the size of a common ground-nesting bee - an important crop pollinator - has grown smaller in heavily farmed landscapes. The link between intensive agriculture and the size of Andrena nasonii bees has important implicati... 阅读全文>>

日期：2016-03-27 In December, negotiators at the Paris climate meeting adopted insurance as an instrument to aid climate adaptation. Earlier in the year, the leaders of the G7 pledged to bring climate insurance to 400 million uninsured individuals in poor countries... 阅读全文>>

日期：2016-03-27 Calculations by scientists have found highly magnetized, rapidly spinning neutron stars called magnetars could explain the energy source behind two extremely unusual stellar explosions. Stellar explosions known as supernovae usually shine a billion... 阅读全文>>

日期：2016-03-27 For people struggling with obesity, logging calorie counts and other nutritional information at every meal is a proven way to lose weight. The technique does require consistency and accuracy, however, and when it fails, its usually because people do... 阅读全文>>

日期：2016-03-27 You may have heard of crows, magpies, and mockingbirds recognizing individual people. These birds live among people, so it may be natural that they learn to differentiate people. But what about the animals that live in remote areas? Scientists in So... 阅读全文>>

日期：2016-03-27 A Sandia-led team has developed a way to make a magnetic material that could lead to lighter and smaller, cheaper and better-performing high-frequency transformers, needed for more flexible energy storage systems and widespread adoption of renewable... 阅读全文>>

日期：2016-03-27 Bees can use sophisticated signals to warn their nestmates about the level of danger from predators attacking foragers or the nest, according to a new study. Biologists at UC San Diego and in China found that an Asian species of honey bee can produc... 阅读全文>>

日期：2016-03-26 Although years of drought and over-pumping have significantly depleted groundwater in Arizona and California, a new study shows the situation has an upside: It has created underground reservoirs where extra surface water can be stored during wet tim... 阅读全文>>

日期：2016-03-26 Routine mammography--widely recommended for breast cancer screening--may also be a useful tool to identify women at risk for heart disease, potentially allowing for earlier intervention, according to a study scheduled for presentation at the America... 阅读全文>>

日期：2016-03-26 Viruses that infect bacteria are among the most abundant life forms on Earth. Indeed, our oceans, soils and potentially even our bodies would be overrun with bacteria were it not for bacteria-eating viruses, called bacteriophages, that keep the micr... 阅读全文>>

日期：2016-03-26 Not getting enough charitable donations? Try having people to touch sandpaper before you ask for money. A new study shows that touching rough surfaces triggers the emotion of empathy, which motivates people to donate to non-profit organizations. We... 阅读全文>>

日期：2016-03-26 Researchers from New Jersey Institute of Technology (NJIT) have identified unique anatomical features in a species of blind, walking cavefish in Thailand that enable the fish to walk and climb waterfalls in a manner comparable to tetrapods, or four-... 阅读全文>>

日期：2016-03-26 The real reason people close their eyes when they kiss is because the brain cant deal with more than two things at once. 接吻时闭眼的真正原因是大脑无法同时处理两件以上的事。 That is the finding of academics who have explored one of the great mysteri... 阅读全文>>

日期：2016-03-25 A study has found that high glycemic index foods, like white bread, bagels and rice, increase the risk of lung cancer. The study confirms that carbohydrates are a contributing factor in increasing the risk of the lung disease. 研究发现，白面包、百吉... 阅读全文>>

日期：2016-03-17 Scientists at the University of Sussex have discovered how parts of organs grow differently when body size changes. Published today (Wednesday 16 March), the study entitled, Differential scaling within an insect compound eye, reveals how different p... 阅读全文>>

日期：2016-03-17 Snapping shrimps, the loudest invertebrate in the ocean, may be silenced under increasing ocean acidification, a University of Adelaide study has found. Published today in the journal Proceedings of the Royal Society B, the researchers report that u... 阅读全文>>

日期：2016-03-17 Nearly four billion years ago, life arose on Earth. Life appeared because our planet had a rocky surface, liquid water, and a blanketing atmosphere. But life thrived thanks to another necessary ingredient: the presence of a protective magnetic field... 阅读全文>>

日期：2016-03-17 It's important to know how microorganisms -- particularly pathogenic microbes -- grow under various conditions. Certain bacteria can cause food poisoning when eaten and bacterial growth in medical blood supplies, while rare, might necessitate discar... 阅读全文>>