[baddox]

What data suggests that? The data I've seen (and I'll admit I have no relevant expertise and therefore little more than intuition on what sources to trust) seems to suggest that climate change will likely impose costs on humanity in the tens of billions, but that those costs are probably quite low in the grand scheme of things. I certainly haven't seen any data to suggest a credible threat of significant human population decline, much less human extinction.

[pyre]

If the infrastructure that we have collapses there will be mass starvation. Probably more so in 1st world countries than in places where people are basically hand-to-mouth.

[baddox]

Why would the infrastructure collapse?