[Dizzy]

I apologize for being ignorant, and please excuse my lack of in depth research on this, I am just not knowlegeable on this topic, but is this a feature I could call 'auto-migration'; One where you have two different races on several of your planets and the races begin to migrate by themselves to the proper breathable atmospheres?

I have just conquered a planet owned by a rival that breathes Oxygen and my race breathes Hydrogen. I do have other planets that have oxygen atmospheres, but the population on them are all hydrogen breathers. Will Oxygen breathing population migrate in automatically on these planets? And by the same token, will my hydrogen breathers begin migrating out?