Cell – 18 March 2013
Servo – September 2011
Popular Mechanics USA – June 2004
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Popular Mechanics USA – January 2006
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Cell – 28 March 2013
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Cell – 11 April 2013
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Discover – April 2011
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Immunity – April 2013
Popular Mechanics USA – July 2007
Discover – July-August 2012
Popular Mechanics USA – December 2006
Popular Mechanics USA – April 2012
Popular Mechanics USA – July 2010
Popular Mechanics USA – Home & DIY Guide 2010
Popular Mechanics USA – June 2011
Discover – September 2011
Servo – March 2011
Servo – January 2012
Discover – December 2012
Popular Mechanics USA – December 2010
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Popular Mechanics USA – November 2010
Popular Mechanics USA – March 2010
Discover – June 2011
Popular Mechanics USA – May 2011
Popular Mechanics USA – May 2009
Discover – March 2013
Discover – January-February 2013
Popular Mechanics USA – April 2009
