Is this BS? I don't know.
There weren't ice ages until the recent past (2.5MYA) and in the intervening years we've had about 24 periods of global warming and global cooling (ice ages) and numerous mini-ice ages.
I'm not sure if you're serious... You think there weren't ice ages until 2.5MYA? That's patently false....
You're correct. I was talking about the Pliocene Ice Age. There weren't ice ages for what? 250 million years (a quarter of a billion years) until recently.
"There have been at least five major ice ages in the earth's past (the Huronian, Cryogenian, Andean-Saharan, Karoo Ice Age and the Quaternary glaciation). Outside these ages, the Earth seems to have been ice-free even in high latitudes."
The Karoo was from: "360 to 260 " MYA.
The chicken little aspect of global warming comes from saying "the world will end" if CO2 levels rise to a quarter what it was 50 million years ago. No. It won't. That exaggeration is part of the problem. Need we do something about pollution? yes of course. Need we reduce carbon emissions? yes, of course.
Will the world end; will civilization collapse if we take another 20 years before the advent of wind and solar and other alt-energies become significant players? No. Hell no. Exaggerating claims only hurts our credibility.
We will have solar energy as soon as the utility companies solve one technical problem -- how to run a sunbeam through a meter.