They did, didn't they! Not in the bulk of scientific discussion though, just in media outlets, broadsheets, opinion columns, etc.
It does rather sound like somebody bought into the Koch / Heartland propaganda stream whole heartedly.
Hopefully commenters can bring up "the little ice age" et al. so we can all play denialist talking point bingo.
The big event that caused it to come into pop culture in the 70s was a landmark paper by James Hays, John Imbrie and Nicholas Shackleton, published in Science in 1976.
But you think its the Koch brothers. And anyone who actual knows history is playing denialist bingo.
You've won the hacker news Candace Owens conspiracy award for ignoring facts and doubling down on a silly conspiracy theory because it fits some narrative you want to promote today.
No.
> But you think its the Koch brothers
That's your strawman. What is known is the amount of effort put in by Koch and others to muddy the waters and belittle what became accepted internationally in the late 1960s.
> You've won the hacker news Candace Owens conspiracy award
Is that someone I should know of?
> for ignoring facts
What facts have I ignored?
> and doubling down on a silly conspiracy theory
What, that tobacco companies hired PR firms to make their poison look good, and fossil fuel companies hired more or less the exact same firms to upsell CO2 ?
That's on the record for anyone that cares to look.
> because it fits some narrative you want to promote today.
It's been the case for nigh on 50 years now - hardly a flash in pan here today gone tomorrow made up story.