In the News
Elderly At Risk For Physical Disabilities Exercise, Improve Physical F
Elderly adults at risk for physical disabilities are able to adhere to a regular program of moderate exercise for one year, a recent study of 213 men and women suggests. Improvements in physical function were greater in participants who reported 150 minutes or more per week of moderate intensity physical activity. Adult Stem Cells Are Touchy-feely, Need Environmental Clues
Bioengineers at the University of Pennsylvania determine that mesenchymal stem cells "feel"their physical environment before turning into bone, muscle, neurons or other types of tissue. Their report is the first to establish that stem cells rely on mechanical process to differentiate, as opposed to responding to just the chemical signals from their environment. They believe it might be possible to "prime"stem cells for therapy in the lab before clinical therapy. Scientists Map The World For Nature Conservation
For years, experts have been calling for an improved database that would enable them to develop more effective global nature conservation strategies. Botanists at the University of Bonn have taken a major step in this direction with the publication, in the Journal of Biogeography, of a world map of plant biodiversity. "We have found out for the first time where, within each of the different vegetation zones, plant biodiversity is highest,"says Professor Wilhelm Barthlott. Sinkie: The International Association of People Who Dine Over the Kitc
The day after Thanksgiving is designated as Sinkie Day (Standing In Nutritious Kitchens Ingesting Everything). With tongue in cheek, the author shares letters from guilt-free Sinkies, lists ways to spot other Sinkies, and provides other useful information to free us from the guilt, shame, and embarrassment of being discovered eating with fingers over the kitchen sink. Trapped Rainbow: New Technique To Slow Down, Stop And Capture Light Of
Scientists have discovered a technique which may be able to slow down, stop and capture light. The technique would allow the use of light rather than electrons to store memory in devices such as computers, enabling an increase in operating capacity of 1,000% by using light's broad spectrum rather than single electrons. Coming Soon: The Sun In 3-D
Twin spacecraft designed to capture 3-D 'stereo' views of the sun and solar wind were shipped from Johns Hopkins to NASA's Goddard Space Flight Center for their next round of pre-launch tests. Protein Found That May Provide Relief From Neuropathic Pain
Research in rodents has provided evidence that a protein called LRP1 may help to ease neuropathic pain by blocking the response of glial cells that support and protect sensory neurons in the peripheral nervous system. Neuropathic pain is caused by injury to the peripheral nerves in diseases such as HIV/AIDS, shingles, and cancer or in repetitive motion disorders and trauma, and does not respond well to conventional pain-relieving drugs. Low Levels Of Perchlorate Exposure Are Safe For Pregnant Women, Study
Despite great concerns that small amounts of ingested perchlorate -- a chemical which is ever-present in the environment -- decreases thyroid function among individuals, it has no effect on the thyroid function of women in early pregnancy, including those with a low-iodine diet, according to a new study. Thyroid hormone is critical for the neurodevelopment of a fetus--particularly in the first trimester of pregnancy--and requires the mother to receive an adequate intake of iodine. Do It Yourself Anti-satellite System? Military And Civilian Satellites
Satellite tracking software freely available on the Internet and some textbook physics could be used by any organization that can get hold of an intermediate range rocket to mount an unsophisticated attack on military or civilian satellites. Ultrafast Optical Shutter Is Switched Entirely By Laser Light
It's a rare case of all light and no heat: A new study reports that a laser can be used to switch a film of vanadium dioxide back and forth between reflective and transparent states without heating or cooling it.
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