One of my favorite sources on Youtube is www.youtube.com/user/WhatifAltHist. Alternate history and current events with due diligence.
From 17 Jan 2021
I've always considered ice more likely than runaway greenhouse. But the 'delay' in onset predates the Industrial Revolution. 
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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.tragectory: Line goes down and to the right.
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