In the News
Molecular Steps Involved In The Creation Of Gene-silencing MicroRNAs I
MicroRNAs are small, remarkably powerful molecules that play a pivotal role in gene silencing. But how do miRNAs arise? In a study published last year in Nature, researchers at The Wistar Institute identified the earliest steps in the creation of miRNAs in the cell nucleus. Now, in a new Nature study, the Wistar group picks up the process in the cell cytoplasm and tracks it through to the maturation of the finished miRNAs. Study Finds Anticonvulsant Drug Poses Greater Birth-defect Risk Than S
Use of the anticonvulsant drug valproate during pregnancy may pose a significantly great risk of birth defects than does use of other antiseizure medications. In the March 22 issue of Neurology, researchers from the North American AED (Antiepileptic Drug) Pregnancy Registry at Massachusetts General Hospital (MGH) report that women taking valproate alone had a fourfold increased risk of having a child with a major malformation, compared with the risk among women taking other anticonvulsants. New NASA Office Will Study Strange Cosmic Phenomena
NASA's Goddard Space Flight Center will house the agency's new Einstein Probes Office, created to study the universe's exotic phenomena: dark energy, black holes and cosmic microwave background radiation. Flu Vaccine Associated With Slight Increase In Risk Of Hospitalization
Influenza vaccine is associated with a small but increased risk for hospitalization with the potentially debilitating neurological disorder known as Guillain-Barré syndrome, although the absolute risk associated with the vaccine is very low, according to a report in the Nov. 13 issue of Archives of Internal Medicine, one of the JAMA/Archives journals. Brain Research Shows Why Long-term Drug Users Just Can't Say No
Research has shed new light on why long term drug users find it hard to say no, despite dire consequences to their health. A study into the frontal cortex, the key region of the brain involved in decision making, has shown that drug users have to place much greater demand on the brain to control impulses. Brain Cell Activity Increases Levels Of Key Ingredient In Alzheimer's
Increased communication between brain cells increases levels of amyloid beta, the key ingredient in Alzheimer's brain plaques, scientists at Washington University School of Medicine in St. Louis have found. Scientists Use 'Dark Web'To Snag Extremists And Terrorists Online
Terrorists and extremists have set up shop on the Internet, using it to recruit new members, spread propaganda and plan attacks across the world. The size and scope of these dark corners of the Web are vast and disturbing. But in a non-descript building in Tucson, a team of computational scientists are using the cutting-edge technology and novel new approaches to track their moves online, providing an invaluable tool in the global war on terror. Funded by the National Science Foundation and other federal agencies, Hsinchun Chen and his Artificial Intelligence Lab at the University of Arizona have created the Dark Web project, which aims to systematically collect and analyze all terrorist-generated content on the Web. Piddling Fish Face Off Threat Of Competition
Aggressive territorial male Mozambique tilapia fish send chemical messages to rival males via their urine. They increase urination, have smellier urine and store more in their bladders than less aggressive males, according to new research. [Ironic] An Italian pensioner committed suicide after his wife fell in
Recalling the end of Romeo and Juliet, the 70-year-old man, Ettore, who had sat by his wife's bedside for four months after she slipped into a coma following a heart attack, finally gave up hope and gassed himself in the garage of his family home.Less than a day later, his wife, Rossana, woke up in her hospital bed in Padua and immediately asked for him. Engineers Are Building Robotic Fin For Submarines
Inspired by the efficient swimming motion of the bluegill sunfish, researchers are building a mechanical fin that could one day propel robotic submarines. The researchers chose to copy the bluegill sunfish because of its distinctive swimming motion, which results in a constant forward thrust with no backward drag. In contrast, a human performing the breaststroke inevitably experiences drag during the recovery phase of the stroke.
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