Thanks TWISTER for the interesting topic and the brilliant idea that you've come up with .
I really wonder why some people find it strange when they hear about fetching water from the planet MARS or any other one to our planet .
Scientists with all the signs which occur at this time ; The population that is growing and running the trace amount of water in Earth , the environmental pollution that is growing more than ever before and the crystal clear fact that says " water will not last forever " , Trying to find new resources or to find out a method that enables them to have fresh and pure drinking water , salt water – from the ocean, for instance – is being turned into drinking water .
They succeeded in finding out a method as I mentioned above , but it is not that ultimate success because it costs so much . As GRAMMAR GEEK says in her post :
" The high cost of desalinization has kept it from being used more often, as it can cost over $1,000 per acre-foot to desalinate seawater and make it into drinking water, compared to about $200 per acre-foot to purify normal water into suitable drinking water "
Scientists till now haven't found jut a new resource , that's why they do think of looking for water out of this planet .
Here is what David Grinspoon ; a research scientist at the Southwest Research Institute in Boulder, Colorado, says in an interview with Astrobiology Magazine :
Astrobiology Magazine (AM): You've suggested, in contrast to the conventional view, that Venus may have held onto its water for perhaps as long as 2 billion years. What are the implications for habitability?
David Grinspoon (DG): For habitability, there are implications for Venus and there are implications for terrestrial planets in general. Venus almost certainly had liquid water when it was young. So the conditions for the origin of life, as conventionally defined, were satisfied there as much as on Earth and Mars.
We've been hearing a lot about how Mars may never have been warm, so perhaps Venus was more habitable in that sense than Mars.
The problem in thinking about the habitability of Venus is that, in the conventional view, the water didn't last long. But if the water lasted for billions of years, that becomes much more interesting for the possibility of biological development.
Earth is going to lose its oceans in the future, just as Venus did in the past. How long planets retain their oceans is a function of distance from the sun, all other things being equal. But clouds may allow planets to hold onto their oceans at closer distances to the sun than has been conventionally thought.
[ I deleted few parts of the answer which are not related to our topic ]
Let's suppose that that idea of having fresh and pure water out of salt water – from the ocean , was adopted by specific countries , which countries -do you think –would be well qualified to get started in such a process ?
Of course not the third classed countries , because they even don't know how to give their people a decent living , thus the first classed one would be , I mean the super power countries as Twister says .
As a result the super power countries would be the only one , So they would become more and more rich and make fortune out of this process , while the third classed countries would decay even more than before thousand times .
That's why we are in need to have new resources .