ScienceDaily Top Science Headlines
for Saturday, August 16, 2008
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Cassini Pinpoints Source Of Jets On Saturn's Moon Enceladus (August 15, 2008) -- In a feat of interplanetary sharpshooting, NASA's Cassini spacecraft has pinpointed precisely where the icy jets erupt from the surface of Saturn's geologically active moon Enceladus. New carefully targeted pictures reveal exquisite details in the prominent south polar "tiger stripe" fractures from which the jets emanate. ... > full story
Slipping Through Cell Walls, Nanotubes Deliver High-potency Punch To Cancer Tumors In Mice (August 15, 2008) -- A big challenge in treating cancer with chemotherapy is how to get the most medication into the cells of a tumor without "spillover" of the medication adversely affecting the healthy cells in a patient's body. Now researchers have addressed that problem using single-walled carbon nanotubes as delivery vehicles. This method gets a higher proportion of a given dose of medication into the tumor cells than is possible with the "free" drug. ... > full story
Burmese Pythons Will Find Little Suitable Habitat Outside South Florida, Study Suggests (August 15, 2008) -- Burmese Pythons may have chosen Florida as a vacation destination, but are unlikely to expand further, according to a new study. Although the United States Geological Survey earlier this year released "climate maps" indicating that the pythons could inhabit up to 32 states in the US, new research indicates that the snakes are unlikely to expand out of Florida. ... > full story
Hepatitis B Genotypes And Mutants May Influence Liver Cancer Risk (August 15, 2008) -- Infection with hepatitis B virus (HBV) causes liver cancer in some individuals, but not all strains of the virus are associated with the same degree of risk. If confirmed, the newly reported data could help target chemoprevention strategies in the future. ... > full story
Antarctic Climate: Short-term Spikes, Long-term Warming Linked To Tropical Pacific (August 15, 2008) -- Dramatic year-to-year temperature swings and a century-long warming trend across West Antarctica are linked to conditions in the tropical Pacific, according to an analysis of ice cores. The findings show the connection of the world's coldest continent to global warming, as well as to events such as El Niño. ... > full story
Women And War: The Toll Of Deployment On Physical Health (August 15, 2008) -- More than 80 percent of a sample of Air Force women deployed in Iraq and other areas around the world report suffering from persistent fatigue, fever, hair loss and difficulty concentrating. ... > full story
Big-brained Animals Evolve Faster (August 15, 2008) -- Ecologists and evolutionary biologists analyzed body size measures of 7,209 species of birds and found that avian families that have experienced the greatest diversification in body size tend to be those with brains larger than expected for their body size. ... > full story
Preventing Protein Clumping Characteristic Of Parkinson's Disease With Baker's Yeast (August 15, 2008) -- Parkinson disease is a debilitating and lethal neurodegenerative disease, for which there is currently no cure. However, new data have provided evidence to support that idea that agents that disrupt the formation of the abnormal aggregates of a protein called alpha-syn that characterize the brain of individuals with PD might have therapeutic effects. ... > full story
Chemists Take Gold, Mass-produce Beijing Olympic Logo (August 15, 2008) -- Nanoscientists have mass-produced the 2008 Summer Olympics logo -- 15,000 times. All the logos take up one square centimeter of space. The researchers printed the logos as well as an integrated gold circuit using a new printing technique, called Polymer Pen Lithography, that can write on three different length scales using only one device. It is fast, inexpensive and simple and could find use in computational tools, medical diagnostics and the pharmaceutical industry. ... > full story
Model For Neurological Disorder 'Angelman Syndrome' Developed (August 15, 2008) -- A model for studying the genetics of Angelman syndrome, a neurological disorder that causes mental retardation and other symptoms in one out of 15,000 births, has been developed by biologists at The University of Texas at Austin. ... > full story
In The Long Run, Exertion Regulation Wins The Day For Marathon Runners (August 15, 2008) -- Scientists have investigated the physiological methods employed by well-trained runners in order to regulate the great physical strain and effort that are needed in order to complete and perform well in marathons and other endurance challenges. ... > full story
Direct Gaze Enhances Face Perception (August 15, 2008) -- Gaze direction is significant for the processing of visual information from the human face. Researchers have discovered that the visual system of the brain processes another person's face more efficiently when the person's gaze is straight ahead than when the gaze is averted. ... > full story
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