Since you're in a button creation mood, I figured I'd bring two other issues to your attention.
Okay... done and attached.
In the zip are a couple of buttons:
1) New archaeology button - more or less stolen from the universal translator; better then the alien head, I think (and frees up the "progenitor psych" icon if the alien factions make it into the game).
2) Atmospheric processor - uses the flask like the bioreactor to show that it's sort of a atmosphere generator, can't mistake that for "control".
3) Weather control - I've grown to dislike the current weather control icon, the dots just seem to be out of place. This uses the "controlled singularity" box to signify control - might work for the tech as well.
4) Weather control satellite - I actually prefer this button, but a satellite is a change in flavour (though I'd prefer a satellite, there are not a lot of orbital structures in Planetfall, I sort of miss them, besides weather control satellite just sound like cool concept - like the ones in Dune)
5) Zero point module - used the nano-tech shape to show that it's sort of harvesting energy from the vacuum.
Furthermore, I attempted to make some buttons for the Morgan Corps. I used the economy grid to show the coperation idea and to tie them together. With the bi-colour scheme, they stand out, so you can't mistake them for generic buildings. What do you think?
Cheers, LT.