White queen

It's 2038 and the earth has been devastated by tectonic shifts accompanied by earthquakes and volcanic eruptions. The U.S. has undergone a socialist revolution, retro-viruses are rampant and most technology relies on a powerful organic "clay" instead of microprocessors.

When aliens land near American-exile Johnny Guglio's adopted African home, Braemar Wilson, a cutthroat reporter, befriends him to get a jump on the story. Though no one knows the alien's intent, White Queen, an anti-alien group, begins working to undermine human trust. Even as ambassadors from both worlds talk, Braemar and Johnny must work together find themselves in a unique position to uncover the truth. The book won the 1991 James Tiptree Jr. Award.