The third world is catching up to the post war west in terms of population growth and pollution output. Unless the rest of the world cuts back all our efforts to cut our own is in vain and, going by the lack of adheirance by non western signatories of the paris agreement, they are decidedly uncooperative on that front.
Outside of a technological miracle it is it seems the only solution possible is to effectively roll back half the worlds development; no more cheap electricty, no more baby booms.
I cannot imagine such proposals are going attract many volunteers.
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