日期:2016-06-03 Astronomers using the upgraded Karl G. Jansky Very Large Array in New Mexico have produced the most detailed radio map yet of the atmosphere of Jupiter, revealing the massive movement of ammonia gas that underlies the colorful bands, spots and whirl... 阅读全文>>

日期:2016-06-02 Earths magnetic field shields us from deadly cosmic radiation, and without it, life as we know it could not exist here. The motion of liquid iron in the planets outer core, a phenomenon called a geodynamo, generates the field. But how it was first c... 阅读全文>>

日期:2016-06-01 The vibrations and pulses that male fiddler crabs produce when they are trying to lure females into their burrows to mate are surprisingly informative. These signals serve as a type of Morse code that the females decipher to learn more about the siz... 阅读全文>>

日期:2016-06-01 Many animals depend on their microbiome to digest their food. Symbiotic microorganisms produce enzymes their hosts cannot, and these work alone or together with the animals own enzymes to break down their food. Many plant-feeding insects need microb... 阅读全文>>

日期:2016-06-01 A team of American and Chinese researchers has developed a new tool that could aid in the quest for better batteries and fuel cells. Although battery technology has come a long way since Alessandro Volta first stacked metal discs in a voltaic pile t... 阅读全文>>

日期:2016-05-31 Garbage, nutrients and tiny animals are pushed around, suspended in the worlds oceans by waves invisible to the naked eye according to a new 3-D model developed by mathematicians at the University of Waterloo. David Deepwell, a graduate student, and... 阅读全文>>

日期:2016-05-31 The Palaeogenomics study conducted by the Human Evolutionary Biology group of the Faculty of Science and Technology, led by Concepcin de la Rua, in collaboration with researchers in Sweden, the Netherlands and Romania, has made it possible to retrie... 阅读全文>>

日期:2016-05-31 The improbable rise of Bernie Sanders presidential campaign presents an interesting question: why is Sanders, a self-proclaimed democratic socialist, running as a Democrat? McGill University sociologist Barry Eidlin examines this question through an... 阅读全文>>

日期:2016-05-31 The waters surrounding Antarctica may be one of the last places to experience human-driven climate change. New research from the University of Washington and the Massachusetts Institute of Technology finds that ocean currents explain why the seawate... 阅读全文>>

日期:2016-05-25 For nearly 60 years, scientists have been trying to determine how manganese oxide (MnO) achieves its long-range magnetic order of alternating up and down electron spins. Now, a team of scientists has used their recently developed mathematical approa... 阅读全文>>

日期:2016-05-25 Along with being a girls best friend, diamonds also have remarkable properties that could make them ideal semiconductors. This is welcome news for electronics; semiconductors are needed to meet the rising demand for more efficient electronics that d... 阅读全文>>

日期:2016-05-25 In 2007, a new type of golf club hit the market. The distribution of mass in the club head made it less likely to twist, making an off-center hit less likely to send the ball veering off course. It did have one drawback: a loud noise when it struck... 阅读全文>>

日期:2016-05-25 Seismologists have created a new algorithm that could one day help give coastal cities early warning of incoming tsunamis. Right now, tsunami warning systems rely on region-specific scenarios based on previous patterns in that area. Thats because sc... 阅读全文>>

日期:2016-05-25 Dark matter is a mysterious substance composing most of the material universe, now widely thought to be some form of massive exotic particle. An intriguing alternative view is that dark matter is made of black holes formed during the first second of... 阅读全文>>

日期:2016-05-18 For the first time, the genomes of the giraffe and its closest living relative, the reclusive okapi of the African rainforest, have been sequenced -- revealing the first clues about the genetic changes that led to the evolution of the giraffes excep... 阅读全文>>

日期:2016-05-18 Most living organisms adapt their behavior to the rhythm of day and night. Plants are no exception: flowers open in the morning, some tree leaves close during the night. Researchers have been studying the day and night cycle in plants for a long tim... 阅读全文>>

日期:2016-05-18 Despite the rigors of scientific inquiry and the methodical approaches of the worlds most talented researchers, sometimes science has a surprise in store. Such was the case when a group of researchers from the U.S. Department of Energys (DOE) Argonn... 阅读全文>>

日期:2016-05-18 Conventional wisdom says removing beach debris helps sea turtles nest; now, as sea-turtle nesting season gets underway, a new University of Florida study proves it. Clearing the beach of flotsam and jetsam increased the number of nests by as much as... 阅读全文>>

日期:2016-05-18 College students who receive special accommodations because of a learning disability say they have less difficulty completing assignments and more contact with faculty outside of class than peers who dont receive extra help. A new study by the Unive... 阅读全文>>

日期:2016-05-18 Designing materials that better respond to dynamic loading can help vehicles minimize vibration, better protect military convoys or potentially make buildings safer during an earthquake. Granular materials -- assemblages of particles that range broa... 阅读全文>>

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