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TwitterActive senior couple running in the woods. (Credit: iStockphoto/Marcel Mooij)From Science Daily:ScienceDaily (Mar. 3, 2009) — When it comes to the hippocampus, a brain structure vital to certain types of memory, size matters. Numerous studies have shown that bigger is usually better. Now researchers have found that elderly adults who are more physically fit tend to have bigger hippocampi and better spatial memory than those who are less fit.The study, in the journal Hippocampus, shows that hippocampus size in physically fit adults accounts for about 40 percent of their advantage in spatial memory.Read more ….
Posts Tagged ‘Sciencedaily’
Physical Fitness Improves Spatial Memory, Increases Size Of Brain Structure
March 3rd, 2009 
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Posted in Science News 
Tags: Advantage, Brain Structure, Elderly Adults, Hippocampus, Istockphoto, Marcel, Memory Brain, Memory Increases, Memory Size, Physical Fitness, Physical Memory, Science Daily, Sciencedaily, Size Matters, Spatial Memory, Types Of Memory 
Comments OffFrom Stem Cells To New Organs: Scientists Cross Threshold In Regenerative Medicine
March 2nd, 2009 admin Computer-rendered image of human organs. New research suggests that bioengineered replacement organs may be closer thanks to a newly developed matrix on which stem cells can form a three-dimensional organ. (Credit: iStockphoto/Sebastian Kaulitzki)From Science Daily:ScienceDaily (Mar. 2, 2009) — By now, most people have read stories about how to “grow your own organs” using stem cells is just a breakthrough away.
Posted in Science News Tags: Bone Marrow, Breakthrough, Groin Area, Human Organs, Hurdles, Hype, Langone, Medicine Computer, Mice, New Scientists, New York University, Replacement Organs, Scaffolding, Science Daily, Sciencedaily, Sebastian, Stanford University, Stem Cells, Threshold, Transplant Rejection Comments OffLower Increases In Global Temperatures Could Lead To Greater Impacts Than Previously Thought, Study Finds
March 1st, 2009 admin The “burning embers diagram”: Risks from climate change by reason for concern, 2001 (left) compared with 2007. (Credit: Smith et al., PNAS)From Science Daily:ScienceDaily (Mar. 1, 2009) — A new study by scientists updating some of the findings of the Intergovernmental Panel on Climate Change (IPCC) 2001 Third Assessment Report finds that even a lower level of increase in average global temperatures due to greenhouse gas emissions could cause significant problems in five key areas of global concern.The study, published in the Proceedings of the National Academy of Sciences, is titled “Assessing Dangerous Climate Change Through an Update of the IPCC ‘Reasons for Concern.”Read more ….
Posted in Science News Tags: Academy Of Sciences, Assessment Report, Average Temperatures, Burning Embers, Dangerous Climate Change, Global Concern, Global Temperatures, Greenhouse Gas Emissions, Intergovernmental Panel On Climate Change, Key Areas, Lead, National Academy Of Sciences, New Scientists, Proceedings Of The National Academy, Proceedings Of The National Academy Of Sciences, Science Daily, Sciencedaily Comments OffHIV Is Evolving To Evade Human Immune Responses
February 28th, 2009 admin Rendering of HIV infecting a cell. (Credit: iStockphoto/Sebastian Kaulitzki)From Science Daily:ScienceDaily (Feb. 28, 2009) — HIV is evolving rapidly to escape the human immune system, an international study led by Oxford University has shown. The findings, published in Nature, demonstrate the challenge involved in developing a vaccine for HIV that keeps pace with the changing nature of the virus.‘The extent of the global HIV epidemic gives us a unique opportunity to examine in detail the evolutionary struggle being played out in front of us between an important virus and humans,’ says lead researcher Professor Philip Goulder of the Peter Medawar Building for Pathogen Research at Oxford University.Read more ….
Posted in Science News Tags: Evolutionary Struggle, Extent, Goulder, Hiv, Hiv Epidemic, Human Immune System, Immune Responses, Oxford University, Pace, Peter Medawar, Professor Philip, Researcher Professor, Science Daily, Sciencedaily, Sebastian, Virus Comments OffCarbon Dioxide Drop And Global Cooling Caused Antarctic Glacier To Form
February 27th, 2009 admin Projection of the what the first Antarctic ice sheet might have looked like as the global climate cooled about 33.5 million years ago. Antarctica is in gray, with the ice sheet shown in meters of ice thickness. The ice sheet is continental in scale, but somewhat smaller than today.
Posted in Science News Tags: 5 Million, Amp, Antarctic Ice Sheet, Antarctica, Carbon Dioxide, Climate Changes, Climatic Conditions, Geologists, Glacier, Global Climate, Global Cooling, Global Temperature Change, Greenhouse, Massive Ice, Million Years, New Perspective, Pollard, Science Daily, Sciencedaily, Transition One Comments OffAdditional Evidence That Potato Chips Should Be Eaten Only In Moderation
February 26th, 2009 admin Acrylamide, found in foods such as potato chips and french fries, may increase the risk of heart disease. Acrylamide has been linked previously to nervous system disorders and possibly to cancer. (Credit: iStockphoto/Alexander Zhiltsov)From Science Daily:ScienceDaily (Feb. 26, 2009) — A new study published in the March 2009 American Journal of Clinical Nutrition by Marek Naruszewicz and colleagues from Poland suggests that acrylamide from foods may increase the risk of heart disease. Acrylamide has been linked previously to nervous system disorders and possibly to cancer.After ingesting large amounts of potato chips providing about 157 micrograms of acrylamide daily for four weeks, the participants had adverse changes in oxidized LDL, inflammatory markers and antioxidants that help the body eliminate acrylamide—all of which may increase the risk of heart disease.Read more ….
Posted in Science News Tags: Acrylamide, Alexander, American Journal Of Clinical Nutrition, Antioxidants, Cancer, Colleagues, French Fries, Heart Disease, Inflammatory Markers, Istockphoto, Journal Of Clinical Nutrition, Micrograms, Moderation, Nervous System Disorders, Participants, Poland, Potato Chips, Risk Of Heart Disease, Science Daily, Sciencedaily Comments OffGenetic Discovery Could Lead To Advances In Dental Treatment
February 25th, 2009 admin A normal mouse tooth on the left, where ameloblast cells that produce enamel are glowing in red. On the right is a tooth with the Ctip2 gene deleted, and little enamel has been able to form. (Credit: Image courtesy of Oregon State University)From Science Daily:ScienceDaily (Feb.
Posted in Science News Tags: Academy Of Sciences, Cavity Prevention, Cells, Credit Image, Dental Treatment, Genetic Discovery, Immune Response, Lead Treatment, National Academy Of Sciences, Nervous System, Oregon State University, Proceedings Of The National Academy, Proceedings Of The National Academy Of Sciences, Replacement Teeth, Science Daily, Sciencedaily, Scientists, Tooth Development, Tooth Enamel, Transcription Factor Comments OffMost Detailed Lunar Map Suggests Little Water Inside Moon
February 24th, 2009 admin An international team of researchers has created the most detailed map of the Moon yet, using the laser altimeter (LALT) instrument on board the Japanese Selenological and Engineering Explorer satellite. C.K. Shum, professor of earth sciences at Ohio State University, is a member of the LALT science team and a co-author of a paper appearing in the February 13 issue of the journal Science.
Posted in Science News Tags: Copyright Science, Credit Image, Detailed Map, Earth Sciences, Engineering Explorer, Explorer Satellite, Journal Science, Laser Altimeter, Little Water, Lunar Poles, Map Of The Moon, Ohio State University, Satellite C, Science Aaas, Science Credit, Science Daily, Science Team, Sciencedaily, Shum, Water On The Moon Comments Off