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. A hand moves forward, but is it a friendly gesture or one meant to do harm? In an instant, we respond -- either extending our arm forward to shake hands or raising it higher to protect our face. But what are the subtle cues that allow us to interpret such movement so we can properly respond to others? http://www.physorg.com/news142703214.html Medicine & Health Wed, 08 Oct 2008 16:46:54 EST news142703214