Um, this might make me out to be a bit whacky but I'll say it anyway.
I think the Earth is trying to correct the damage we have done. There are so many amazing things happening all over the world right now and it does seem to look like the end of time but I find it almost impossible to swallow.
The Earth, save for being destroyed by a huge asteroid, is going to continue with or without human life. Yeah, it would be kick ass if our species could endure until our sun dies. But, man if we don't make it that's cool too and eventually another sentient species will evolve out of what's left.
There's a tiny part of me that says we deserve what we get. We have reasoning but our foresight is damn well non-existant.
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I would feel more optimistic about a bright future for man if he spent less time proving that he can outwit Nature and more time tasting her sweetness and respecting her seniority. ~Elwyn Brooks White, Essays of E.B. White, 1977