http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. As most good students realize, repeated studying produces good memory. Those who study a lot realize, further, that what they learn tends to be preserved longer in memory if they space out learning sessions between rest intervals. Neuroscientists at Cold Spring Harbor Laboratory (CSHL) have now discovered how this so-called "spacing effect" is controlled in the brain at the level of individual molecules. http://www.physorg.com/news173621201.html Medicine & Health Thu, 01 Oct 2009 13:30:01 EST news173621201 Ecological changes caused by humans affect natural biodiversity. For example, the eutrophication of Greifensee and Lake Constance in the 1970s and 1980s led to genetic changes in a species of water flea which was ultimately displaced. Despite the fact that water quality has since been significantly improved, this species has not been re-established. This was demonstrated by researchers from Eawag and from two German universities (Frankfurt and Konstanz), who analysed genetic material from Daphnia eggs up to 100 years old. http://www.physorg.com/news156104885.html Biology Thu, 12 Mar 2009 19:28:40 EST news156104885 A simple measurement of resting pulse predicts coronary events in women independently of physical activity and common risk factors, such as smoking and alcohol consumption, finds a study published on bmj.com today. http://www.physorg.com/news152951670.html Medicine & Health Wed, 04 Feb 2009 06:35:08 EST news152951670 Individuals with sleep-related breathing disorders appear to burn more calories when resting as their conditions become more severe, according to a report in the December issue of Archives of Otolaryngology -Head & Neck Surgery. http://www.physorg.com/news148583306.html Medicine & Health Mon, 15 Dec 2008 17:08:26 EST news148583306 Researchers have discovered a new 'trick' that allows HIV to overtake resting T cells that are normally highly resistant to HIV infection, according to a report in the September 5th issue of the journal Cell. The binding of the virus to the surface of those cells sends a signal that breaks down the cells' internal skeleton, a structure that otherwise may present a significant barrier to infection. http://www.physorg.com/news139747648.html Medicine & Health Thu, 04 Sep 2008 11:47:28 EST news139747648