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     <title>Cash register receipts a new BPA concern</title>
   	 <description>	If you read environmental news on a regular basis then you know that consumers are in an uproar about the revelation that SIGG water bottles contain bisphenol-A (BPA), despite the company's previous BPA-free advertisements. The reusable water bottle news continued last week when the news came out that GAIAM aluminum bottles leach BPA at a rate that is significantly higher than the SIGG bottles. However, savvy consumers may want to consider another source of BPA -- cash register receipts.</description>
     <link>http://www.physorg.com/news174594336.html</link>
	 <category>Space &amp; Earth</category>
	 <pubDate>Mon, 12 Oct 2009 22:10:03 EST</pubDate>
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     <title>Professor working on practical cloaking device (w/ Video)</title>
   	 <description>(PhysOrg.com) -- A physicist at the University of St Andrews hopes to make major advances in the 'tantalising' field of invisibility in the next two years. Professor Ulf Leonhardt, who cites the Invisible Woman and Harry Potter as sources of inspiration, is working on a blueprint for a practical cloaking device that could even protect coastlines from water waves. </description>
     <link>http://www.physorg.com/news170002666.html</link>
	 <category>Physics</category>
	 <pubDate>Thu, 20 Aug 2009 16:10:02 EST</pubDate>
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     <title>Transform a ball into a rock -- or make it invisible -- using transformation optics</title>
   	 <description>(PhysOrg.com) -- Science fiction and fantasy tales are full of the ability to "cloak" characters with invisibility. Whether it is a spaceship with a cloaking device, or a young wizard with an invisibility cloak, the interest in rendering someone or something invisible captures our fancy. Scientists have succeeded in creating the illusion of invisibility by bending light around a region for concealment. These types of devices have limitations, however; one of these limitation that the device normally has to be touching the object to be rendered invisible - or in very close proximity. </description>
     <link>http://www.physorg.com/news166350509.html</link>
	 <category>Physics</category>
	 <pubDate>Thu, 09 Jul 2009 10:00:02 EST</pubDate>
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     <title>The art of invisibility and the perfect cat's eye</title>
   	 <description>(PhysOrg.com) -- In recent years scientists have explored the impossible by developing invisibility or 'cloaking' devices, but can the same technology also help make things more visible?</description>
     <link>http://www.physorg.com/news165589714.html</link>
	 <category>Physics</category>
	 <pubDate>Tue, 30 Jun 2009 14:09:06 EST</pubDate>
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     <title>When 'superstar' scientists die</title>
   	 <description>(PhysOrg.com) -- When "superstar" academic scientists die, their collaborators experience a significant and permanent decline in productivity, according to a recent paper coauthored by MIT Sloan School of Management Professor Pierre Azoulay. Studying the role of collaboration in spurring the creation of new scientific knowledge, he found that the more the collaborators' areas of study overlapped with the superstar, the sharper the decline in output.</description>
     <link>http://www.physorg.com/news148836010.html</link>
	 <category>Other Sciences</category>
	 <pubDate>Thu, 18 Dec 2008 15:20:10 EST</pubDate>
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     <title>Looking vs. Seeing</title>
   	 <description>The superior colliculus has long been thought of as a rapid orienting center of the brain that allows the eyes and head to turn swiftly either toward or away from the sights and sounds in our environment. Now a team of scientists at the Salk Institute for Biological Studies has shown that the superior colliculus does more than send out motor control commands to eye and neck muscles.</description>
     <link>http://www.physorg.com/news140802860.html</link>
	 <category>Medicine &amp; Health</category>
	 <pubDate>Tue, 16 Sep 2008 16:54:20 EST</pubDate>
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     <title>Invisibility undone: Chinese scientists demonstrate how to uncloak an invisible object</title>
   	 <description>Harry Potter beware! A team of Chinese scientists has developed a way to unmask your invisibility cloak. According to a new paper in the latest issue of Optics Express, the Optical Society's (OSA) open-access journal, certain materials underneath an invisibility cloak would allow invisible objects be seen again.</description>
     <link>http://www.physorg.com/news139625813.html</link>
	 <category>Physics</category>
	 <pubDate>Wed, 03 Sep 2008 01:56:53 EST</pubDate>
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