I want to ask people what would be the best techniques for large-scale construction on Mars, in support of a Martian colony.
Awhile back, I'd read how bacteria can be used to generate strong sandstone material, which could be used for building purposes:
The architectural pictures do have an exotic look that seems strangely appropriate for Mars.
I'm wondering how feasible this approach might be for the Martian environment?
Here is a TED talk by Magnus Larsson about creating sandstone architecture using bacteria:
The nice thing about lithification is that it eliminates porosity and creates an impermeable sandstone rock. Hopefully, this would keep atmosphere and heat in, and the cold out.
Sure, obviously, the cold Martian environment looks plenty hostile to life from Earth, but perhaps a strain of bacteria could be bred/engineered which would be able to survive at the equatorial zones for sufficiently long periods to be useful. (I'm not talking about right on the surface, which drops to ridiculously cold temperatures at night, but rather below the surface. I'm not sure how deep the Martian permafrost is, though)
Anybody have any better ideas for mass construction on Mars?
Alternatively, what about digging into the ground, or living in caves?