日期：2015-05-06 They may not be on Facebook or Twitter, but dolphins do, in fact, form highly complex and dynamic networks of friends, according to a recent study by scientists at Harbor Branch Oceanographic Institute (HBOI) at Florida Atlantic University. Dolphins... 阅读全文>>

日期：2015-05-06 Among patients with Clostridium difficile infection (CDI) who recovered following standard treatment with the antibiotics metronidazole or vancomycin, oral administration of spores of a strain of C difficile that does not produce toxins colonized th... 阅读全文>>

日期：2015-05-04 A team of astronomers using ground-based telescopes in Hawaii, California and Arizona recently discovered a planetary system orbiting a nearby star that is only 54 light-years away. All three planets orbit their star at a distance closer than Mercur... 阅读全文>>

日期：2015-05-04 Bats fly with breathtaking precision because their wings are equipped with highly sensitive touch sensors, cells that respond to even slight changes in airflow, researchers have demonstrated for the first time. Scientists from Johns Hopkins Universi... 阅读全文>>

日期：2015-05-04 A Michigan State University professor was part of an international team of scientists that has discovered a new bird in China. The new bird, the Sichuan bush warbler, resides in five mountainous provinces in central China. The discovery, shared in t... 阅读全文>>

日期：2015-05-04 The decline of the world's large herbivores, especially in Africa and parts of Asia, is raising the specter of an empty landscape in some of the most diverse ecosystems on the planet, according to a newly published study. Many populations of animals... 阅读全文>>

日期：2015-05-04 The role played by telomeres in mammalian cells has been known for several years. It is also known that these non-coding DNA sequences, which are found at the ends of the chromosomes, protect them and are necessary to ensure correct cell division. W... 阅读全文>>

日期：2015-05-04 A team of Ludwig-Maximilians-Universitaet (LMU) in Munich has identified the first fossil specimens of a major group of killifishes that is widely distributed in freshwater habitats today. The 6-million-year-old material sheds new light on the evolu... 阅读全文>>

日期：2015-05-04 The international Solar Wind Sherpas team, led by Dr. Shadia Habbal of the University of Hawaii at Manoa Institute for Astronomy, braved Arctic weather to successfully observe the total solar eclipse of March 20 from Longyearbyen on the island of Sp... 阅读全文>>

日期：2015-05-04 University of Sydney geoscientists have helped prove that some of the ocean's underwater volcanoes did not erupt from hot spots in Earth's mantle but instead formed from cracks or fractures in the oceanic crust. The discovery helps explain the spect... 阅读全文>>

日期：2015-05-04 Bombardier beetles, which exist on every continent except Antarctica, have a pretty easy life. Virtually no other animals prey on them, because of one particularly effective defense mechanism: When disturbed or attacked, the beetles produce an inter... 阅读全文>>

日期：2015-05-04 A team of highly determined high school students discovered a never-before-seen pulsar by painstakingly analyzing data from the National Science Foundation's (NSF) Robert C. Byrd Green Bank Telescope (GBT). Further observations by astronomers using... 阅读全文>>

日期：2015-05-04 What happens to an astronaut's brain during a mission to Mars? Nothing good. It's besieged by destructive particles that can forever impair cognition, according to a UC Irvine radiation oncology study appearing in the May 1 edition of Science Advanc... 阅读全文>>

日期：2015-04-30 Spanish and Portuguese researchers have analysed the composition and radiative effect of desert aerosols during two episodes which simultaneously affected Badajoz (Spain) and vora (Portugal) in August 2012. Results show that the intrusion of dust fr... 阅读全文>>

日期：2015-04-30 When consumers taste cheap wine and rate it highly because they believe it is expensive, is it because prejudice has blinded them to the actual taste, or has prejudice actually changed their brain function, causing them to experience the cheap wine... 阅读全文>>

日期：2015-04-30 Recombination, or crossing-over, occurs when sperm and egg cells are formed and segments of each chromosome pair are interchanged. This process plays an crucial role in the maintenance of genetic variation. Matthew Webster and Andreas Wallberg at th... 阅读全文>>

日期：2015-04-30 Marine ecosystems can be changed by night-time artificial lighting according to new research published in the Royal Society journal Biology Letters. The results indicate that light pollution from coastal communities, shipping and offshore infrastruc... 阅读全文>>

日期：2015-04-30 Genetic testing of Iupiat people currently living in Alaska's North Slope is helping Northwestern University scientists fill in the blanks on questions about the migration patterns and ancestral pool of the people who populated the North American Ar... 阅读全文>>

日期：2015-04-29 Lucy and other members of the early hominid species Australopithecus afarensis probably were similar to humans in the size difference between males and females, according to researchers from Penn State and Kent State University. Previous convention... 阅读全文>>

日期：2015-04-29 The demise of Neanderthals may have nothing to do with innovative hunting weapons carried by humans from west Asia, according to a new study published in the Journal of Human Evolution. The researchers, from Nagoya University and The University of T... 阅读全文>>