4 ms·You could make a lot of stuff from the CO2 in the Martian atmosphere, for sure!by rmcginnis 7y agoYou could make a lot of stuff from the CO2 in the Martian atmosphere, for sure!codethief 7y agoNot a chemist, but as far as I understand the process you're using to process the CO2 also needs water or at least some other source of hydrogen? Where would you get that from on Mars? (Sure, there is water on Mars but not in the atmosphere.)__sy__ 7y agoMost likely subsurface ice