I take so long these days to complete a book. I pick it up and read a chapter, and then I don't have an opportunity to pick it up again for weeks. Usually meaning I have re-read the chapter I already read.
Anyway, I'm currently working my snail's pace way through
The Upside of Down, by Thomas Home- Dixon. I'm at Chapter 3 and so far I'm really impressed. The idea of the thermodynamics of empire (that all empires are sustained by a flow of energy, with energy expanded to include calories, heat, etc.) Usually when I'm reading non-fiction, I'm mentally picking apart the arguments with what ifs. Whenever I think of a 'what if' or 'what about' question when reading Homer-Dixon, he has a response to it within the next few pages. So either my objections of very boring, or Homer-Dixon and I think very similarly.

I really enjoyed his previous book,
The Ingenuity Gap, which left me twisting around thoughts from it at random times during the rest of my day.