“ What you seem to be describing is a perpetual motion machine. Good luck getting that one done. Problems with a hydrogen economy is that it takes... (read full comment) ” 

Posted on September 16, 2010 at 6:38 PM EDT

+ 1 more comment posted in this discussion

“ I think that the automobile manufacturers are missing the point. With today's switching power supply technology, the car could easily be designed... (read full comment) ” 

Posted on December 17, 2009 at 5:53 PM EST

“ hafnium production Well, obviously we need to refine more zirconium for the nuclear and fake jewelry industries so we can get more hafnium. I... (read full comment) ” 

Posted on December 17, 2009 at 5:36 PM EST

“ Wildcat Diesel I believe that students at the University of Arizona are working with the photosynthesis approach thereby bringing a new meaning to... (read full comment) ” 

Posted on December 10, 2009 at 2:26 PM EST

“ Voltaic Pile Remember: Alessandro Volta used copper and zinc discs seperated by brine-soaked cotton in his Voltaic pile back in 1800. The brine... (read full comment) ” 

Posted on December 10, 2009 at 2:07 PM EST