This book isn't out until June, but I just read a description, and thought it was something a lot of primal folks would be interested in.
Here's an excerpt:
"Although this decision to control our own food supply is what propelled us into the modern world, Wells demonstrates—using the latest genetic and anthropological data—that such a dramatic shift in lifestyle had a downside that we’re only now beginning to recognize. Growing grain crops ultimately made humans more sedentary and unhealthy and made the planet more crowded."
It's not just about human health (pandemic diseases, depression, diet), but also global warming, religion, and other topics.
Wells is the author of "The Journey of Man" which is a science-based but accessible book about the out-of-Africa hypothesis... maybe also of interest to the primal audience, since we all care at least a little about human evolution! He's made some documentaries, too, but I haven't seen them.
He's a great speaker, if you ever get a chance to see him. (He's doing a lecture at Cornell University on March 2 based on the new book... I'm sure I can't be the only one on these forums from Ithaca NY, crazy hippie town that it is, lol.)