I was talking with a denialist friend of mine and he said the ice loss and warmer temperatures are a good thing because they will allow mankind to inhabit areas previously too inhospitable to live in (Siberia for instance).

He just didn’t understand why that wasn’t really a good thing.

Although the long term impact of global warming (regardless of the cause) will be a population drifting northward, as tropical and southern climes become uninhabitable.