O'Neill colony construction

--- In spacesettlers@yahoogroups.com, Ian Woollard
wrote:

> > The
> > inside would need to be lined with a membrane to prevent air from
> > leaking through the pores in the concrete.
>
> Yes, some sort of calking. You might be able to grow it.
>

Hey! I like this idea. That's definitely a unique way of looking at
the problem - growing the membrane.

Do you have any more info on this solution? I've never seen any
reference to it before. Is this your idea?

Do you mean grow it as a biological organism or as a chemical
process?

Please share more info. Thanks.

TangoMan