I was in high school and a physics major in college during the 1970s “Global Cooling” consensus.
The science was all about the sun and the earth’s repeated history of ice ages and warming spells.
The minority report was that mankind and CO2 had any impact whatsoever on global temperatures.
Then in the 1980s, science became politicized. How much money can we redistribute in the name of saving Gaia.
WUWT has an excellent article that reviews the non-politicized science of the 1970s and shows that it wasn’t wrong.