There never was a "theory", per se. There was granny's rumatiz medicine for sale in the form of global warming. Theory implies some sort of scientific approach and there was none. The only people who believed it are the kind of people you would find in Jonestown, dead from an overdose ordered by their "leader", saint Algore.
There is danger from all men. The only maxim of a free government ought to be to trust no man living with power to endanger the public liberty.
Public virtue cannot exist in a nation without private, and public virtue is the only foundation of republics. There must be a positive passion for the public good, the public interest, honour, power and glory, established in the minds of the people, or there can be no republican government, nor any real liberty: and this public passion must be superior to all private passions. John Adams