I'm currently reading The Case for Space by Robert Zubrin and it's really good. You can tell the guy dedicated his career and life to really thinking about how humans might live in Space, whether that be on the Moon, Mars or in the Asteroid Belt.

I recently read Why Nations Fail by Daron Acemoğlu and that was also very good, it explained the shortcomings of other theories such as the geographic determinism espoused by Jared Diamond in Guns, Germs and Steel although I think Why Nations Fail was a bit repetitive at times.