“ Return to Sender Did anyone notice there is no address provided for someone desiring to enter the contest? Also notice the offer is only $5 mill... (read full comment) ” 

Posted on February 14, 2007 at 8:22 PM EST

“ Where can one find a scale of relative efficiency of the various types solar cells based on light frequency or intensity? Which emits more energy,... (read full comment) ” 

Posted on February 14, 2007 at 8:12 PM EST