From: hrubin@stat.purdue.edu   
      
   In article ,   
   Gene P.  wrote:   
      
   >I was thiking about terraforming Mars, and how most such schemes call for   
   >big solar mirrors to heat the surface a bit.   
      
   >Venus has the reverse problem... WAY too hot.  How much sunlight would   
   >have to be blocked to break the greenhouse loop and reduce temperatures   
   >into the earthlike range?   
      
   This is far from the only problem.  We would also have to get   
   rid of a huge portion of the atmosphere, most of which will not   
   condense out even at Martian temperatures.   
      
   --   
   This address is for information only.  I do not claim that these views   
   are those of the Statistics Department or of Purdue University.   
   Herman Rubin, Department of Statistics, Purdue University   
   hrubin@stat.purdue.edu         Phone: (765)494-6054   FAX: (765)494-0558   
      
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