The aliens are here. And they want to help. The extraordinary new project from one of the country's most acclaimed and consistently brilliant SF novelists of the last 30 years. The Jackaroo have given humanity fifteen worlds and the means to reach them. They're a chance to start over, but they're also littered with ruins and artifacts left by the Jackaroo's previous clients. Miracles that could reverse the damage caused by war, climate change, and...