The average is often, and frequently, not at all what should care about. What you really care about is avoiding the worst case scenario. And in a wayi one of the arguments is, the worst case sinrs, five degrees of warming from the pre industrial base line - that's likely. But i think there as other worstcs, whichwe etn actually exploring the book,. which i'll bring up.
Economist Robert Pindyck of MIT talks about his book, Climate Future, with EconTalk host Russ Roberts. Pindyck lays out what we know and do not know about climate change. He argues that because of the nature of greenhouse gases, adaptation must be part of the policy response to climate change.