Children of Ruin

Tchaikovsky's Children Of Series focuses on the lifeforms left behind by mankind's self-destruction. The sentient spiders from Children of Time are back, and are exploring a solar system caught in a civil war. One of science fiction's strengths is being able to imagine other beings, and Tchaikovsky's depictions of their life and thoughts are excellent here as well.

Decent read! Unexpectedly enjoyed having previously read one of the author's reference books (if you have gotten into Children of Ruin you might be able to guess which topic it concerns :) Less bombastic storyline than Children of Time, a larger focus on cognition in general