High Quality Content by WIKIPEDIA articles! Emberverse, or Change World, is a series of post-apocalyptic alternate history novels written by S. M. Stirling. The novels depict the events following "The Change", which caused electricity, guns, explosives, internal combustion engines, and steam power to stop working, closely paralleling the initial impetus of Steve Boyett`s 1983 novel Ariel. Most of the action in the series takes place in the Willamette Valley of Oregon in the United States.