I'm reading Nagasaki: Life After Nuclear War by Susan Southard. It's well researched and very interesting, especially since I've been playing a ton of Fallout 4 lately. Puts a sobering edge on that game for sure.
I've put Worm on hold, while I burn through "The Martian", since it's from the library.
It's the best thing I've read in a long time. I'm liking it a lot. "Worm" is also pretty good (thanks to flag for the suggestion).