the -100 stability of world ending pollution is a global debuff, regardless of the pollution in the city

the -15 district is local pollution being high.

I had some troubles with stability, but everything went back to 100 when I started shoving neural implants on everyone

My game ended because the world was too dirty. But that didn't come from me. The stupid thing is that the culture that was the biggest polluter won. I was only a few fame (is it called so in english?) points behind. For me, this means that if I am leading in fame, I should pollute the world as quickly as possible to finish the game and take home the victory, even though I have wrecked the world. The degree of pollution that a culture contributes should give a malus on the fame or something like that.