I stumbled upon some great reddit posts this year with reading suggestions, and compiled my own "humanity is fucked" themed reading list, which included:

* Mercy of Gods by James S.A. Corey

* The Light Pirate by Lily Brooks-Dalton

* Oryx and Crake by Margaret Atwood

* Dawn by Octavia Butler

I then diverged from this list (I have more) to re-read (though it's not such a great divergence):

* If This Is a Man / The Truce by Primo Levi

Other books I enjoyed reading this year in no particular order:

* Tau Zero by Poul Anderson

* Machine Vendetta by Alastair Reynolds

* Elysium Fire by Alastair Reynolds

* Aurora Rising by Alastair Reynolds

* Shadow of the Silk Road by Colin Thubron (loved this)

* The Lord of the Rings (the god knows how many times re-read)

* The Centauri Device by M. John Harrison

* Future's Edge by Gareth Powell

* Blueshift by Joshua Dalzelle

* The Heart of a Continent by Francis Younghusband (I didn't quite manage to finish it, but it was a fascinating read nonetheless)