Hi Greg,

I posted this chart in my post based on Hansen's paper "Implications of "Peak Oil" for Atmospheric CO2 and Climate". It's from the IPCC's Summary for Policymakers (2001).

The first time I was introduced to the concept of peak oil, I was giddy to the point of hysteria. Must admit a bit of giddiness at this moment. I know many on this site beleive peak oil is a bigger threat than global warming, but I can't help but think the 20-100 year time lag between CO2 release and maximum effect is a far less addressable than issues of increasing fossil fuel prices.

As many of you know, recent studies document a rapid acceleration (relative to recent estimates) of the rates of polar melting. Climate response to increased greenhouse gas forcing is not linear. Okay, the tipping points leading to rapid climate change are not currently understood - doesn't mean they are not there. My fingers are crossed.