1) James S. A. Corey: Leviathan Wakes (audio, finished 01-17) The first book of the Expanse series, I started the audio version pretty immediately after finishing the first season of the Syfy TV adaptation. The series has been described as "Game of Thrones in space", which isn't too far off, but the book has a much narrower perspective as it only follows two people's points of view for all but the prologue and epilogue. Both are excellent, however, and now I need to decide whether to continue with the books right now or wait for the second season of the series to air.
2) James S. A. Corey: Caliban's War (audio, finished 01-22) So obviously I just went ahead and continued listening to them. The second had a bit more of the politics that characterized the first TV season.
3) James S. A. Corey: Abaddon's Gate (audio, finished 01-28)
4) James S. A. Corey: Cibola Burn (audio, finished 02-06)
5) James S. A. Corey: Nemesis Games (audio, finished 02-10) [finished the novella The Vital Abyss the same day]
6) James S. A. Corey: Babylon's Ashes (audio, finished 02-18)
7-9) Lev Grossman: The Magicians trilogy (ebook, finished 04-08) Another series of books I had to read after watching the first season of the TV adaptation. I'm glad I'd seen the show first, because the first book focuses on the least interesting character and I probably wouldn't have gotten into it if I didn't know what other stuff was going on offscreen because of the show.
10) Nnedi Okorafor: Binti: Home (ebook, finished 04-15) Excellent sequel to Binti, which I read last year.
11) David Brin: River of Time (ebook)
12) David Brin: Existence (ebook)
13-15) Ann Leckie: Ancillary Justice, Ancillary Sword, and Ancillary Mercy (ebooks, finished 08-12) Fantastic scifi trilogy, partly from the perspective of a semi-omniscient ship with thousands of bodies, in a society that doesn't mark gender (so everyone is "she"). I first heard about it from Language Log, and then a friend recommended it when the first one was on sale on Amazon.
16) Charles C. Mann: 1493: Uncovering the New World Columbus Created (ebook, finished 08-15) I bought this one shortly after finishing 1491 back in 2011, but read it only in little fits and starts over the course of several years. Every bit as fascinating and compelling as that was, for some reason I never managed to read it in significant stretches until this summer.
17-19) N. K. Jemisin: Broken Earth trilogy (The Fifth Season, The Obelisk Gate, The Stone Sky) (ebooks, finished 09-30) Another excellent trilogy read because a friend recommended it on Facebook.
20) William Gibson: The Peripheral (ebook, finished 10-09)