Earlier quoted context omitted.
I've been seeing studies since the release of the Inconvenient Truth claiming that the point of no return has been reached. I don't doubt climate change, but I'm very skeptical of studies positing a slippery slope of catastrophic proportions. It's true we don't know the cascading effects of increased CO2 and methane emissions, but that doesn't mean it the unknown is apocalyptic.
And hey - maybe we won't all die!
Unfortunately we'll take a lot of innocent fora/fauna down as well.