World Enough and Time

With the earth a war-blasted ruin, civilization's last outposts are the orbital habitats known as Worlds. From one of these, New New York, the starship New home sets out for an earth-like planet in the Epsilon Eridani system with ten thousand brave colonists. Among them is Marianne O'Hara,who survived a baptism of cataclysmic fire to emerge as the last hope of her doomed race. But madness, mysterious deaths and irreversible sabotage threaten their mission, propelling the crippled starship Newhane blindly toward an unimaginable future...and hurtling Marianne toward an astonishing confrontation that could mean the end or the transcendent rebirth of humankind.