> The fact that climate science was evolving 40 years ago is used to discount all the articles from the 70s that said we were entering a new ice age. The cooli

> The fact that climate science was evolving 40 years ago is used to discount all the articles from the 70s that said we were entering a new ice age. The cooling predictions were that if levels of particulate pollution, which causes cooling, continued rising they way they were their cooling effect would be larger than the warming effect of greenhouse gases. We responded to the particulate pollution problem by massively reducing particulate emissions. With particulates no longer a significant factor the models of those that had predicted ice ages predicted warming.