The Coo and the Future of Humanity

The Coo saw themselves as a divine harbinger of the future. During their travels, they constantly improved and changed themselves until they became masters of genetic and nanotechnology manipulation. With this ability to control the material world, they assumed a religious self-imposed mission to remake the universe as they saw fit. Within less than a thousand years, every human world was destroyed, doppity populated, or even worse, changed. Despite the fervent rearment, the colonies could achieve nothing against its billion-year-old foes. Most of them perished right after their caretakers left. Others lasted a little longer to come to long-term instabilities. On a precious few worlds, descendants