“ Invisibility cloaking's big customer is the military. Why not just have a tiny drone watch a light-changing tile-covered vehicle from afar, where... (read full comment) ” 

Posted on October 27, 2011 at 7:52 PM EDT

“ A better way? Just wondering - what if coal-fired plants were located close to forest land. From what I've read, a single mature tree can absorb... (read full comment) ” 

Posted on June 24, 2009 at 12:20 PM EDT

“ Eliica Check out this wheel-motor electric race car: http://en.wikipedia.org/wiki/eliica (read full comment) ” 

Posted on March 28, 2009 at 2:20 PM EDT