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. (PhysOrg.com) -- Like most animals, snails have either left- or right-handed asymmetry (chirality), both internally and externally, and the handedness is hereditary. A new study has for the first time found that handedness, as seen in the direction of a snail shell spiral, can be reversed by manual manipulation of eight cell stage embryos, which is much earlier than previously thought. http://www.physorg.com/news178786914.html Biology Mon, 30 Nov 2009 07:03:02 EST news178786914 Researchers at the California Institute of Technology (Caltech) suggest that the eccentricity of Saturn's orbit around the sun may be responsible for the unusually uneven distribution of methane and ethane lakes over the northern and southern polar regions of the planet's largest moon, Titan. On Earth, similar "astronomical forcing" of climate drives ice-age cycles. http://www.physorg.com/news178724806.html Space & Earth Sun, 29 Nov 2009 13:49:18 EST news178724806 Our brains get a first impression of people's overriding social signals after seeing their faces for only 100 milliseconds (0.1 seconds). Whether this impression is correct, however, is another question. Now an international group of experts has carried out an in-depth study into how we process emotional expressions, looking at the pattern of cerebral asymmetry in the perception of positive and negative facial signals. http://www.physorg.com/news164434052.html Medicine & Health Wed, 17 Jun 2009 05:08:17 EST news164434052 A new study by physician researchers from Hasbro Children's Hospital and Children's Hospital Boston identifies risk factors for the severity of asymmetrical head shapes, known as deformational plagiocephaly (DP), or more commonly as flat head syndrome. The study was published in the March 2009 edition of the Journal of Craniofacial Surgery. http://www.physorg.com/news155939175.html Medicine & Health Tue, 10 Mar 2009 21:26:37 EST news155939175 (PhysOrg.com) -- A new study of the skeletal fossils of Neanderthal and Early modern man suggest the lack of a "throwing arm" may have made the difference in human evolution. Researchers Jill A. Rhodes and Steven Churchill, evolutionary anthropologists published their findings in the January 2009 edition of the Journal of Human Evolution. The paper entitled, "Throwing in the Middle and Upper Paleolithic: inferences from an analysis of humeral retroversion," provides some clues to the extinction of Neanderthal. http://www.physorg.com/news151326825.html Other Sciences Fri, 16 Jan 2009 11:13:45 EST news151326825 A tug-of-war between the two sides of the brain causes it to become asymmetrical, according to research published today in the journal Neuron. Asymmetry in the brain is thought to be important to enable the two hemispheres to specialise and operate more efficiently. http://www.physorg.com/news151159139.html Medicine & Health Wed, 14 Jan 2009 12:38:59 EST news151159139 As humans, we have a very intuitive concept of time, and of the differences between the past, present, and future. But, as scientists Edward Feng of the University of California, Berkeley, and Gavin Crooks of the Lawrence Berkeley National Laboratory point out, science does not provide a clear definition of time. http://www.physorg.com/news139830010.html Physics Fri, 05 Sep 2008 10:40:10 EST news139830010 Most women with breast cancer assume that surgery to preserve their breast will be less disfiguring than a mastectomy that removes the entire breast. http://www.physorg.com/news134797384.html Medicine & Health Wed, 09 Jul 2008 04:43:04 EST news134797384