This story was originally published in Undark and appears here with permission. As Russian forces advanced this summer on Kharkiv, Ukraine’s second-largest city, the façade of an eight-story apartment building in the Saltivka district suffered heavy damages from shelling, as did many other multi-family structures. Dozens of bullets scarred the gray front wall, and most of the upper windows were shattered. By August, only a few families remained. Some noticed dozens of bats trapped in the lower windows. The animals had flown through broken panes of glass, then got stuck,…