I read a compelling article in Discover magazine a couple of years ago, but have not seen a second data point for the basic premise in the literature since.
The author was saying that we were near to heading into the next ice age, and had the graphs and cylces to support this, and agreed that yes, there was global warming caused by man, but by extreme luck (he never says this, "luck" is my word), mankind started global warming 6000 years ago with the advent of agriculture. This may keep us out of the next extremely likely ice age.
My conclusion: We may stave off the next ice age with rising seas. Results will be that only 3 or 4 billion people die instead of just about everyone if we have another ice age.
---Al
