“ Despite improved energy conversion efficiency, it seems like it would be extravagantly expensive to burn jet fuel to power the turbine versus... (read full comment) ” 

Posted on May 25, 2011 at 3:08 PM EDT

“ You Write: *Both the IBOVESPA Index and the spot price of gold changed from superexponential growth to some other kind of regime in the time frame... (read full comment) ” 

Posted on June 2, 2010 at 12:00 PM EDT