It really depends on where you are in the campaign @starman . Sometimes buildings only because available after doing certain objectives. I don't remember which campaign unlocked it, but I never had to research it.
Im in Washington early on. Dinosaurs are sick and it requires scientists to be trained but u need science station there isnt any obvious way to do it. I might restart campaign to see if I can avoid that situation. In jwe2 everything seems to need researching.
Restarted campaign and avoided situation that led to sick dinos to progress. Its a bug that allows you to enter a cull de sac with no way to cure dinos without restarting campaign.
Restarted campaign and avoided situation that led to sick dinos to progress. Its a bug that allows you to enter a cull de sac with no way to cure dinos without restarting campaign.