“ How much land do we need? It sounds wonderful, but: The question is how much surface area is needed to absorb the sunlight for the conversion? ... (read full comment) ” 

Posted on April 21, 2010 at 4:05 PM EDT

“ Give credit to HRL Laboratories IBM shourl give credit to HRL Laboratories since IBM copied HRL's approach of growing graphene on SiC, (and... (read full comment) ” 

Posted on February 5, 2010 at 3:17 PM EST