“ We don't need black windows. The ability to change a window from clear to black is a dubious win. Instead of solar heat being absorbed in the... (read full comment) ” 

Posted on January 1, 2010 at 12:16 PM EST

“ Just a thought: Coal is basically lumps of pure carbon mixed with dirt. Not much grows on it. I expect that nanowires would be similar in... (read full comment) ” 

Posted on January 1, 2010 at 12:16 PM EST

“ Not necessarily: The new cells could cost thrirty times as much to make. Indeed initially the big use would be for solar cells that are extremely... (read full comment) ” 

Posted on January 1, 2010 at 12:02 PM EST