It's not about whether or not we cause it. The facts are pointing towards "it's happening". Whether or not we are causing it is sort of irrelevant. It's only relevant in the notion that "if we didn't cause it then we can't stop it"... but I don't think that's entirely true. I think if anything we should try our best to prepare for this apparent "global climate destabilization"
What are we going to do about it, is the question he is asking. And as for the "next 60 years comment", we're not talking 60 years... we're talking in the next decade.
PS - A global respect and consciousness for the Earth would be awesome, I agree. I think the cities will always be disgusting though.