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) -- Generally, scientists prefer to avoid the concept of perpetual motion. The idea of a machine that could produce movement that goes on forever, and using that movement to generate an endless stream of energy, is usually considered more science fiction than science. But recently, physicist Pavel Ivanov has investigated previous speculation that an exotic fluid with unusual properties could cause energy to flow continuously between different regions of space, resulting in a runaway transfer of energy. If an advanced civilization were able to construct a device to capture this energy, it might finally possess its own "perpetuum mobile" -- or perpetual motion. http://www.physorg.com/news172225206.html Physics Tue, 15 Sep 2009 09:50:02 EST news172225206 A study of oyster reefs in a once-pristine California coastal estuary found them devastated by invasive Atlantic Coast crabs and snails, providing new evidence of the consequences when human activities move species beyond their natural borders. http://www.physorg.com/news167056720.html Biology Fri, 17 Jul 2009 13:39:27 EST news167056720 (PhysOrg.com) -- The recent findings by a team of Northeastern University ecologists studying plant life on the Boston Harbor Islands may advance societal efforts to stem the damage caused by invading exotic species. http://www.physorg.com/news161534941.html Biology Thu, 14 May 2009 15:49:50 EST news161534941 Plants that range northward because of climate change may be better at defending themselves against local enemies than native plants. http://www.physorg.com/news146328549.html Biology Wed, 19 Nov 2008 14:49:09 EST news146328549 (PhysOrg.com) -- Scientists announced Wednesday the discovery of a previously unidentified nearby source of high-energy cosmic rays. The finding was made with a NASA-funded balloon-borne instrument high over Antarctica. http://www.physorg.com/news146324339.html Physics Wed, 19 Nov 2008 13:38:59 EST news146324339 As 600,000 visitors and athletes gear up to travel to China for the 2008 Olympic Games, travelers should be most concerned about respiratory illnesses and dog bites, according to report by an Emory University travelers' health expert, her colleagues at the Centers for Disease Control and Prevention (CDC) and around the globe. http://www.physorg.com/news136648161.html Medicine & Health Wed, 30 Jul 2008 14:49:21 EST news136648161