[Alneyan]

BBQ was speaking of Climate Control facilities, and not Value Improvements. Climate Control only changes conditions, and is virtually worthless; if you want a lot of population, the Organic trait will be much better any time of the day, and so much quicker. Conditions only affect reproduction rates (up to +10% or so from Deadly to Optimal), and are very slow to change.

From your post Slynky I gather you spoke of Value Improvements, since these are the ones increasing your resource values, and thus your production.