Eu acho que você está se lembrando da série de Desunião de Trigon por Michael P. Kube-Mcdowell .
Synopsis
The devastating Food and Fuel Wars have turned once-powerful nations into isolated farming communities. Barter has replaced currency , and scientist - considered responsible for the world's misery, are burned at the stake. Hidden in the Idaho hills, astronomer Allen Chandliss secretly monitors his radio telescope, listening for signs of intelligent life, hoping that aliens will come and improve things on Earth. For seventeen years he has waited patiently. His patience is about to pay off...