Metallicity: Book 2 of the Eichi Testaments

The Imperial Astrophysical Institute's official position is that, as a planet, Demeter should not exist. In a stellar system far older than Sol's, the lack of metal should have prevented any planet from forming around the weak red sun. But Demeter overcame the odds and the planet and its life survived for billions of years, even after the first human settlers arrived. Now something has happened to...