Closed eco-systems

Right. I agree completely.

I would also add that you might want to expand your facility or make
another one. You have to get your materials somewhere.

It's better to be over-supplied with what you need than living on the
edge.. it's better to thrive than just barely survive.

George

--- In spacesettlers@y..., Ryan Healey wrote:
> NH3 should be avilable in asteriods so you could get it from there.
>
> I suspect that space colonies, particulary the early ones won't be
fully
> self-sustaining and will still require quite a bit of technology to
regulate
> the environment. We don't need to go to full closure stright away
we could do
> it in steps getting closer and closer to fully closing it off with
extra
> knowledge. Projects like Biosphere II are a good idea and CELSS is
something
> that should be studied but you don't have to try to get it
completely
> independant, it's OK to have to get a few things from outside.
>
> --- Sren Nielsen wrote:
> > I only see one way, to start in the small and then scale up.
> > We shall not only use one kind of ecologic system to test, we
shall use many
> > and get lot of experiences.
> > EX: Does we need produktion of NH3 from nitrogen, and if, has it
to be
> > produced by bacteria, or is syntetic (N2 + H2) good enough, or
can we