“ I agree with cutting back the budget for hydrogen fuel cells. They are not economically feasible presently. The catalyst is platinum, which makes... (read full comment) ” 

Posted on November 23, 2009 at 10:31 PM EST

“ If these cells are to be used as an alternative energy source, using and making charcoal to absorb photons ultimately defeats the goal of reducing... (read full comment) ” 

Posted on November 23, 2009 at 10:12 PM EST