[lopmotr]

To grow fungus from CO2, don't you first have to grow a plant then let the fungus eat dead plant? Plants require (heavy) equipment to support them.

[labawi]

If it can photosynthesise (on gamma rays no less), then perhaps not. Mold can grow on concrete walls and stuff, so not sure what it needs.

[lopmotr]

It sounds like this fungus only produces energy, and doesn't fix carbon like photosynthesis does.

Mold growing on concrete walls is actually living off the dust and other organic debris that accumulates on the surface if you don't clean it.