Preface: I am really new at Civ3 (used to play Civ1 in 2000 BC). For factories and plants I find that the civilopedia is woefully under-descriptive. Does anyone have any specifics on any of these questions? 1. For a regular old factory, how much pollution does it produce? Is it proportional to the shield increase (i.e. the more use you're getting out of it, the more pollution it produces?) 2. Same question for coal plants. 3. For nuclear plants, what is the chance of a meltdown? 1% per turn? 5%? P.S.: Sort of unrelated but I am playing as the Ottomans (who are supposedly scientific) but I don't seem to be getting the free tech I am supposed to get from an age advance. Does anyone know if this is bugged, or something? I seem to remember it working when I was the Byzantines (also scientific). Thanks very much for any help or advice!