XPost: sci.space.policy, sci.physics   
   From: jfindley@cinci.nospam.rr.com   
      
   In article <29k0dd-vco.ln1@mail.specsol.com>, jimp@specsol.spam.sux.com   
   says...   
   >   
   > In sci.physics Alain Fournier  wrote:   
   > > On Oct/11/2016 at 8:19 PM, Serigo wrote :   
   > >> On 10/11/2016 6:10 PM, Jeff Findley wrote:   
   > >>> In article , invalid@invalid.com says...   
   > >   
   > >>>   
   > >>>> no food, no water, no air.   
   > >>>   
   > >>> There is a bit of water on Mars (e.g. polar regions)   
   > >>   
   > >> conjecture, not proven and so little, unusable.   
   > >   
   > > Well, let's say it is a very strong conjecture.   
   > >   
   > >>> and again a CO2   
   > >>> atmosphere.  Food could be grown.   
   > >>   
   > >> all moisture would leave the plant.   
   > >> Not enough CO2 or atmosphereic pressure to support any plants.   
   > >> Radiation will kill it off in a few years.   
   > >   
   > > You would do so in pressurized greenhouses. It can be done.   
   >   
   > Just because something can be done does not mean it should be done.   
   >   
      
   You mean like growing tomatoes in greenhouses in Canada instead of   
   growing them in open fields in a more temperate climate?   
      
   Go look up how much of the US tomato market is supplied by Canadian   
   greenhouses, especially in the winter.   
      
   Jeff   
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