XPost: sci.space.policy, sci.physics   
      
   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.   
      
      
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