I dont know where this urban legend came from ? I look carefully into civilopedia and there is no relation between de-forestation and global warming.
World pollution is cause by the sum of all cities pollution+nuclear strike+ nuclear meltdown. ref: civilopedia.
Thus if you built hospital without mass transit and you lets population increase without control you will get 1 polution skull per citizen over size 12. A.i. increase their city over 20 without mass transit ( more than 8 pollution skull), here come global warming, plant forest as you wish you wont change anything at all. Raze a.i. city is the solution.
World pollution is cause by the sum of all cities pollution+nuclear strike+ nuclear meltdown. ref: civilopedia.
Thus if you built hospital without mass transit and you lets population increase without control you will get 1 polution skull per citizen over size 12. A.i. increase their city over 20 without mass transit ( more than 8 pollution skull), here come global warming, plant forest as you wish you wont change anything at all. Raze a.i. city is the solution.