Susan Beth Pfeffer

Susan Beth Pfeffer (born February 17, 1948) is a retired American author best known for young adult science fiction. After writing for 35 years, she received wider notice for her series of post-apocalyptic novels, officially titled "The Life As We Knew It Series", but often called "The Last Survivors" or "Moon Crash" series, some of which have appeared on the New York Times Bestselling List. Provided by Wikipedia