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375,156 articles
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MONDAY 6. FEBRUARY, 2012
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22:24
Smoking associated with more rapid cognitive decline in men
Smoking in men appears to be associated with more rapid cognitive decline, according to a report published Online First by Archives of General Psychiatry. -
22:24About half of all public and private elementary school students could buy food in one or more competitive venues on campus (vending machines, school stores, snack bars or a la carte lines) by the 2009-2010 school year and sugary foods were available to almost all students with access to these options, according to a report published in the February issue of Archives of Pediatrics & Adolescent Medicine, one of the JAMA/Archives journals.
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22:24Treatment with three relatively new "targeted" cancer drugs has been linked to a slightly elevated chance of fatal side effects, according to a new analysis led by scientists at Dana-Farber Cancer Institute. They added that the risk remains low, but should be taken into account by physicians and patients.
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22:24An ocean mapping expedition has shed new light on deepest place on Earth, the 2,500-kilometer long Mariana Trench in the western Pacific Ocean near Guam. Using a multibeam echo sounder, state-of-the-art equipment for mapping the ocean floor, scientists from the University of New Hampshire Center for Coastal and Ocean Mapping/Joint Hydrographic Center found four "bridges" spanning the trench and measured its deepest point with greater precision than ever before.
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22:24Researchers have long known that specific parts of the brain activate when people view particular images. For example, a region called the fusiform face area turns on when the eyes glance at faces, and another region called the parahippocampal place area does the same when a person looks at scenes or buildings. However, it's been unknown whether such specialization also exists for visual working memory, a category of memory that allows the brain to temporarily store and manipulate visual information for immediate tasks. Now, scientists have found evidence that visual working memory follows a more general pattern of brain activity than what researchers have shown with initial visual activity, instead activating a more diffuse area in the front of the brain for all categories of visual stimuli.
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22:24A new scoring method can help doctors quickly decide which stroke patients will respond well to the clot-busting drug alteplase, according to a study published in the February 7, 2012, print issue of Neurology, the medical journal of the American Academy of Neurology.
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22:12
Vital Signs: Fructose Consumption Increases Visceral Fat, Study Reports
Fructose consumption may increase cardiovascular risk factors because it increases visceral fat, the kind that accumulates around internal organs.
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22:11The new eastern span of the Bay Bridge in San Francisco is designed to go with the flow if a major earthquake strikes, to ensure minimal damage and disruption.
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22:05
Sex Education Less Effective in Conservative States (LiveScience.com)
LiveScience.com - Sex education is failing to reduce adolescent birthrates in conservative states, according to a new study. -
22:01
Why Bank Websites Are Suddenly Less Secure
So much for "two-factor authentication."
Throwing another lock on seems like the most logical way to secure an apartment -- or a website. But a new attack called "Man in the Browser" allows attackers who have infected a computer with malicious software to get around the bank website security systems that demand, for example, a pin in addition to a password.
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21:52
Kinect-Powered Amusement Park Will Blow Your Mind
"Live Park 4D Art Factory" blurs the line between reality and virtual reality. -
21:46Diamond coatings on joint replacements are safe, and could make them more durable less painful.
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21:41A look at the issues confronting teachers trying to explore climate science amid heated public debate.
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21:41
A bug's (sex) life: Diving beetles offer unexpected clues about sexual selection
Studies of diving beetles suggest sperm evolution may be driven by changes in female reproductive organs, challenging the paradigm of post-mating sexual selection being driven mostly by competition among sperm. In the process, the researchers discovered an unexpected and stunning variety of sperm form and behavior.
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21:41When a researcher set out to study a chemical in male mouse urine called MTMT that attracts female mice, he didn't think he would stumble into a new field of study. But the research has led scientists to the discovery that it's the copper in our bodies that makes mammals recoil from sulfur chemical smells.
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21:41The love song of an extinct cricket that lived 165 million years ago has been brought back to life by scientists. The song – possibly the most ancient known musical song documented to date – was reconstructed from microscopic wing features on a fossil discovered in North East China. It allows us to listen to one of the sounds that would have been heard by dinosaurs and other creatures roaming Jurassic forests at night.
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21:30
The right's stupidity spreads, enabled by a too-polite left | George Monbiot
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21:24As the interest in environmentally responsible business practices grows globally, researchers are interested in how that interest translates into consumer sales. Researchers from the University of Missouri have found that United States consumers are more willing to buy clothing made from sustainably grown U.S. cotton than apparel produced using conventional practices in an unknown location. Jung Ha-Brookshire, an assistant professor in the textile and apparel management department in the College of Human Environmental Sciences at MU, says transparency is the key.
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21:24When Hiroaki Matsunami, Ph.D., at Duke set out to study a chemical in male mouse urine called MTMT that attracts female mice, he didn't think he would stumble into a new field of study.
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21:24Some 165 million years ago, the world was host to a diversity of sounds. Primitive bushcrickets and croaking amphibians were among the first animals to produce loud sounds by stridulation (rubbing certain body parts together). Modern-day bushcrickets – also known as katydids – produce mating calls by rubbing a row of teeth on one wing against a plectrum on the other wing but how their primitive ancestors produced sound and what their songs actually sounded like was unknown – until now.
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21:24Google Doodle, which highlights anniversaries on the Google search engine, Monday showcased Francois Truffaut, the late French "new wave" film-maker who would have turned 80 on Monday.
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21:24Using whole-genome sequencing, a team led by researchers from Harvard School of Public Health (HSPH) and the Broad Institute has traced the path of the E. coli outbreak that sickened thousands and killed over 50 people in Germany in summer 2011 and also caused a smaller outbreak in France. It is one of the first uses of genome sequencing to study the dynamics of a food-borne outbreak and provides further evidence that genomic tools can be used to investigate future outbreaks and provide greater insight into the emergence and spread of infectious diseases.
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21:24Susceptibility to anthrax toxin is a heritable genetic trait that may vary tremendously among individuals, according to a new study by researchers at the Stanford University School of Medicine.
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21:24Researchers at MassGeneral Hospital for Children (MGHfC), The Jackson Laboratory and other institutes have uncovered 27 new candidate genes for congenital diaphragmatic hernia (CDH), a common and often deadly birth defect.
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21:24Satellite tracking of threatened loggerhead sea turtles has revealed two previously unknown feeding 'hotspots' in the Gulf of Mexico that are providing important habitat for at least three separate populations of the turtles, according to a study published recently in the journal Biological Conservation.
Naposledy aktualizované zdroje
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National Geographic News (6. 2, 22:59)
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ScienceNOW (6. 2, 22:33)
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CBC - Technology & Science News (6. 2, 19:14)
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BBC Science/Nature (6. 2, 18:05)
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Sci-Tech Today (6. 2, 17:43)
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TIME (6. 2, 11:30)
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EurekAlert (6. 2, 06:00)
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NASA (2. 2, 21:27)
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