Yes. In the 60s and 70s, the narrative was that air pollution would block the sun, causing the next ice age. Crops would fail. People would starve and freeze to death. Then, the warmer trend began and the narrative shifted to global warming.
Let's not forget back then it was also the ozone layer over Antarctica would disappear and we would be scorched! Guess what, the ozone layer recovered.
I think a lot of the "sky is falling" frenzy has to do with selling newspaper, magazines and their contemporary equivalents - airtime and click bait. Follow the money.
@PatKirby good point about the polar bears. Years ago, Al Gore was giving a talk and shilling for global warming $$. Someone in the audience pointed out how the polar bear population was increasing. Conman Al nearly blew a fuse.
@BizSuitStacy The envirofanatics will show a photo of a polar bear floating on a block of ice as proof that "We're all gonna die!! Ahhh!!" They don't mention that polar bears can swim hundreds of miles.