"For instance, a “runaway greenhouse effect”—analogous to Venus-- appears to have virtually no chance of being induced by anthropogenic activities" (p. 90)

http://www.ipcc.ch/meetings/session31/inf3.pdf

Thanks; that's useful. A couple notes:

* It's from 2009

* It's not an official report or conclusion, but appears to be more of a discussion aimed at "scoping" the next report.

Still, it's far better than what previously informed our discussion here.