Four Lost Cities★★★★★
Annalee Newitz Fascinating look at how cities form, live and die, seen through archaeological discoveries at Pompeii, Angkor, Cahokia and Çatalhöyük.
The Time Ships★★★⯪☆
Stephen Baxter A sequel to H.G. Wells’ The Time Machine that drastically expands the scope across multiple timelines, from the dawn of time to the far future seen in the original. Now with Dyson spheres, nanobots, and a seemingly endless war that can only be stopped in the past.