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. How does our biological system know that it is supposed to operate on a 24-hour cycle? Scientists at the Hebrew University of Jerusalem have discovered that a tiny molecule holds the clue to the mystery. http://www.physorg.com/news178804470.html Medicine & Health Mon, 30 Nov 2009 12:20:02 EST news178804470 Malfunctioning circadian clock genes may be responsible for bipolar disorder in children. Researchers writing in the open access journal BMC Psychiatry found four versions of the regulatory gene RORB that were associated with pediatric bipolar disorder. http://www.physorg.com/news177224772.html Medicine & Health Thu, 12 Nov 2009 05:16:31 EST news177224772 The circadian clocks that set the rhythmic motion of our bodies for wakeful days and sleepy nights can also set us up for vascular disease when broken, Medical College of Georgia researchers say. http://www.physorg.com/news157210291.html Medicine & Health Wed, 25 Mar 2009 14:31:57 EST news157210291 (PhysOrg.com) -- Isaac Edery is concerned with biological clocks, internal mechanisms that enable virtually all plants and animals to behave in rhythmic biological cycles known as circadian rhythms. http://www.physorg.com/news152381334.html Biology Wed, 28 Jan 2009 16:09:26 EST news152381334 Dr. C. Robertson McClung and his colleagues are investigating the genetic basis and molecular mechanisms of circadian cycling and regulation in plants. Dr. McClung, of the Department of Biological Sciences, Dartmouth College, will be presenting this work at the President's symposium of the annual meeting of the American Society of Plant Biologists in Mérida, Mexico. http://www.physorg.com/news134107649.html Biology Tue, 01 Jul 2008 05:07:29 EST news134107649