This series, published in the UK by Gollancz and in the US by Del Rey, is about the possibilities of human evolution. The first novel Coalescent (2003) is set in the present day, with the hero George Poole uncovering a human 'hive' in the catacombs of Rome. Exultant (2004) is set 25,000 years in the future, when humanity is locked in a galactic war…