Heading for catastrophe?

This from The Guardian is well worth a read.

As usual it has brought the diametrically opposed views out of the cupboard; there are some quite astonishing posts in the comments already.

"Our biggest problem is not global warming but over-population. Our ranks need thinning out a little, and judging by some of the posts here on this supposedly 'intellectual' forum, that may not be such a bad thing."

I particularly like the walking blindfolded towards the edge of a cliff analogy from one poster.

"We, the entire planet, need to start emitting less carbon. Whether global warming is happening now, whether it's happening because of our CO2 is debateable. But the fact remains that AT SOME POINT, the carbon emitted will become a problem. We know the absolute top limit points of that -- it's in tens thousands of ppm, but it is there. And that's the point at which human breathing will become a problem (because your lungs won't be able to diffuse CO2 out of your blood). Long before then we **WILL** cause climate change. The only contention here is whether we're already starting to or not. It's like standing blindfolded before a cliff and arguing about how many more paces we can take forwards; some people think we're right on the edge, some people think we can walk for a bit. But there IS a cliff there."