Simple mod that causes 1 damage per second to the player for each 100PU above 1000PU, adjustable at the top of control.lua. Recommend combining with EvoGUI or other mod that displays local pollution value. Hasn't been tested in multiplayer (to my knowledge), but should theoretically work.
Raw stats are from the beginning of time until now. Each follower and download entry represents one hour of data. Uneventful hours are omitted.