David Geary's new book, The Origin Of The Mind: Evolution Of Brain, Cognition, And General Intelligence
will be of great interest to (almost) all readers of this compendium o' prose. Its content, while not particularly novel to gnxp (e.g., 1, 2), is a massive defense of the idea that intelligence (or, more specifically, g) specifically evolved due to the advantages it gives in (social) problem solving and purposeful planning.

I can't go into much of a review at this time, but I'll say that the book's final two chapters (Evolution of general intelligence, and General intelligence in modern society) are superb reviews and integration of current g literature and Evolutionary (Cognitive) Psychology. If you afford it, buy a copy today. If not, march down to your closest library and demand that they purchase a copy.