As I've been doing daily for more than three years, this morning I was collecting news items documenting the ongoing environmental collapse (and adding punchlines) for the site I coedit.
I ran across a story in the Guardian (UK), entitled 71 months and counting. It's written by the policy director of the New Economics Foundation -- well worth reading.
It's part of a monthly series that began August 1, 2008, with The final countdown, which I revisited. He expected that we had about 100 months to change society dramatically if we were to avoid the 50/50 tipping point of runaway climate change.