70s or 80s iirc? I know less about this than I probably should. As for why we did nothing - a lot of factors, fossil fuel industry had and still has a ridiculous level of influence over politics, people weren't and still aren't willing to give up convenience and creature comforts (or in the case of the richest, their opulence and unearned sense of superiority as they lord over us and flex) to prevent a disaster a) that seems far away b) we somehow still argue whether it exists at all, despite universal consensus among anyone not paid off to say otherwise. The truth of how badly we fucked up is so crushingly bleak that we resort to magical thinking along the lines of "technology will fix it" while we carry on making things worse, when clearly the only solution is cutting consumption across the board and radically redefining how we relate to the flora, fauna and each other... some years ago. At least we get to watch the slowmo downfall of humanity in real time on our pocket-sized nightmare screens?