When I was but a wee lad in the 1970s, they were telling us that we were all going to freeze to death at about the same time that overpopulation would lead to mass starvation. No glaciers covering Detroit, and no mass starvation...
Of course, acid rain was supposed to melt the cities, kill all the fish, kill all the cops...
Then there was Ozone Hole Doom...
“When I was but a wee lad in the 1970s:”
Do you remember the acid rain claims where it was supposed to destroy all green growing things?