In the subtitles of an interview with Mikhail Gorbachev, the former USSR premier is translated as saying that because we have strained nature to the breaking point, "we must, the generations living now, must take a principal decision that we will act differently because the ecological crisis is global." Taking "a principal decision" is an odd turn of phrase, at best, in this context. Almost certainly, Gorbachev said "we must take a principled decision." See more
What if we choose to eradicate ourselves from this Earth, by whatever means? The Earth goes nowhere. And in time, it will regenerate, and all the lakes will be pristine. The rivers, the waters, the mountains, everything will be green again. It'll be peaceful. There may not be people, but the Earth will regenerate. And you know why? - Because the Earth has all the time in the world and we don't. So I think that's where we're at, right now.