I'm reading Language Death by David Crystal. It's recommendation about what is to be done about the situation is interesting.
Recently finished:
Frederick the Great - Robert Asprey
Currently starting:
The First World War Volume 1 - Hew Strachan
The Transformation of European Politics, 1763-1848 - Paul Schroeder
1635: The Dreeson Incident (The Ring of Fire) Eric Flint, Virginia DeMarce. About 1/2 way in, it's the weakest book of the series. It's disjointed and fragmented. I don't know if it'll finish stronger. I can't help wonder if too many cooks are stirring that particular soup.
I urge you to simply ignore any book in the series not written by David Weber and Eric Flint (except the first one written exclusively by Eric Flint)
And if you must insist on being a completest, skim those books only.
About to start on The Limits of Mathematics - a course on information theory and the limits of formal reasoning by Gregory J. Chaitin
Be careful with that one! I haven't read it or heard anything about it, but I once watched a BBC documentary on Goedel, Cantor, Turing, and Bolzmann, and Chaitin seemed to say a lot of philosophically suspect things about just what Goedel had proven about the epistemology of math in the interviews.
I'm about to start "The Great Wave: Price Revolutions and the Rhythm of History" by David Fischer. Economic history is one of the only good areas of economics. So, needless to say, it is also one of the least prestigious areas.