Transhumanity, ecological engineering, cultural clashes and strong characterization mark Spear of Light, the second novel in The Glittering Edge sequence from from Brenda Cooper, sequel to Edge of Night (previously reviewed here at S&F). Shaun and I also talked to Brenda on episode 262 of the podcast. If the first novel in the Glittering Edge sequence was fish-out-of-water stories, as humans learn to deal with transhumanity, and environments alien to them, the second novel is a story of full-on cultural collision. In the wake of the events of the first novel, the transhuman colony of Nexity on the planet Lym, an uncomfortable but necessary compromise created at the end of the first novel, is a source of constant tension. Under that tension between humanity and transhumanity, on Lym, is the dramatic engine that drives Spear of Light. Transhumans, humans and an ecologically fragile planet make for a potent environment for that dramatic engine to flourish and run in. And that doesn’t even mention the offworld events. While the first novel was relatively balanced between offworld and onworld events, and this novel is much more Lym focused, the events in space are crucial to the unfolding of the plot.