What would have happened if we'd adopted the agenda of these "global cooling" alarmists in the 1970s?

I'm so glad someone took the time to post these doomsday comments from my formative years. I spent so much time reading Time and the N Y TImes back then with their covers/headlines regarding the next Ice Age! That's why as much as I support lessening pollution, I'm wary of the warming crazees out there! next up" Temperate zone expansion is killing us!