“ Why not Hydrogen? I would like to know why many people are against the exploration of hydrogen as a alternative fuel. Don't you think petroleum... (read full comment) ” 

Posted on November 3, 2006 at 7:26 PM EDT

“ Hydrogen is the most abundant element in the universe. It only makes sense to try to harness it. If we continue to step back and firmly root... (read full comment) ” 

Posted on September 23, 2006 at 9:29 AM EDT

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