Yes, one of the primary datacenters in downtown Toronto (151 front street) is primarily cooled from pulling cold water from the bottom of lake Ontario and cycling the warm back. I've been in there a number of times, the pipes were way bigger then I expected - pretty cool stuff
I've never went back to campaign actually, I lost my progress at one point and not sure how far I made it. Now I just play master level sandbox, max AI players, huge map.
Generally yes, but I've been working with VMs on various platforms for a very long time, so I'm probably not the best to qualify on what easy is. How easy will depend on what software you are using.
I've done many physical to virtual, and the very rare virtual to physical. Both can have problems you may need to work through (almost always driver related).
+1 for antiyoy. Been playing for years. I still play it all the time. I think I've donated either in this game or one of his other ones but I haven't seen IAP in any of them.
You could have just added a swap file