It’s “climate change”, not just global warming.
Part of the problem is that a decade before I was born, enough newspapers breathlessly reported “scientists” “predicting” “a new ice age”. Despite the fact those headlines misrepresented the scientific consensus of the time so badly that it’s appropriate for me to put all those scare quotes in that sentence, the meme remains potent.
I had a remaindered paperback I bought around 1980 about the coming dawn of a new ice age. Firmly in the realm of wacky conspiracy theory next to Chariot of the Gods, even in the late 70s.
I recall it as something of a silly minority idea of the time, that had its moment. And that it was just a moment -- far less of a moment than Chariot of the Gods that did get TV programmes and discussion off the back of its idiocy. I don't ever remember seeing it in the papers we got at home. Maybe it got exposure via the Daily Mail or similar lover of fake and dodgy news or outrage - never read those.
It was only much, much later I heard it was taken far more seriously in the US, with pieces in media that should perhaps have known better, or checked sources...