Stephen Baxter continues to think big and create SF on a grand cosmic scale in Origin, the third novel of his Manifold trilogy.

The Manifold is an infinite sheaf of alternative universes which Baxter explores in terms of Fermi's Paradox. There's no reason why humanity should be unique; logically there should be alien races, some long enough established to have made their mark on the galaxy; where are they?

Book one, Time, offered a vision of lonely humanity extending to the far end of eternity and finally rebooting a "better" universe. Space showed the consequences of teeming interstellar life, a cruel struggle for resources, punctuated by galactic-sized extinction events. Now Origin confronts the whole Manifold and its and humanity's manipulation by enigmatic "Old Ones".

Astronaut Reid Malenfant (versions of whom starred in Time and Space) again encounters advanced technology as a huge, glowing blue circle—a portal to and from the Red Moon that wanders between universes and has just replaced our own moon. It's habitable and populated by an extraordinary medley from all stages of human evolution, scooped up from different Earths. There's much conflict with primitives leading nasty, brutish and short lives... plus super-evolved humans who debate whether we are truly sentient.

At its core the Red Moon contains the failing World Engine which flips between universes. Also down there is the secret history of this multi-verse, right back to the cataclysmic branch-point from which the Manifold flowered. Who are the Old Ones? "They made the manifold"—but were maybe not so different from us and rash, quixotic Malenfant after all. Highly superior SF, guaranteed to jolt one's sense of wonder. —David Langford

In Evolution, Stephen Baxter explores deep time to dramatise the story of Earth's evolving primates—from tiny shrew-like creatures dodging reptilian predators in the Cretaceous era, to humans of the 21st century and beyond.

The long drama starts with a bang: the Chicxlub meteor impact 65 million years ago—the dinosaur killer—bringing a holocaust of extinctions. Baxter describes that apocalyptic strike and aftermath in lurid, compelling detail.

By now the crater was a glowing bowl of shining, boiling impact melt, wide enough to have engulfed the Los Angeles area from Santa Barbara to Long Beach. And its depth was four times the height of Everest, its lip further above its floor than the tracks of supersonic planes above Earth's surface.

This book's hero is evolution itself, shaping surviving pre-humans into tree dwellers, remoulding a group that drifts from Africa to a (then closer) New World on a raft of debris, confronting others with a terrible dead end as ice clamps down on Antarctica. Elsewhere the river of DNA runs on, and ape-like creatures in North Africa are forced out of dwindling forests to stumble across grasslands where their distant descendants will joyously run.

Although the episodes resonate with one another, each is a separate triumph or tragedy whose early protagonists are uncomprehending animals ("He knew on a deep cellular level that..."). Darwin's imperatives force their successors to grapple with self-awareness, consciousness, memory, abstract thought. Tools emerge, and art, and language. One troubled genius of 60,000 years ago is seen inventing a theory of magic in hope of understanding and controlling the environment—and her contemporaries. Her reward is to become "the first person in all human history to have a name."

The story continues, and the apparent framing narrative—about a last-ditch global conference hoping to solve the ecological nightmares of 2031—is not the end. Baxter's final snapshot is 500 million years in our future....

Enormously ambitious in scope, Evolution shows the whole sweep and precariousness of pre-human and human development. We are so lucky to be here—although, as Baxter makes it clear, the luck may be running out. —David Langford

COALESCENT is the first of a trilogy of novels that does nothing less than tell the story of mankind's possible evolutions and our role in the Universe. Coalescent charts a radical divergence in our evolution; the development of a human hive entity. It is a divergence that has its roots in the dying days of the Roman Empire. The story is told through twin narratives; one takes us through the falling apart of the Roman control of Britain as seen by one girl, the other covers a man's search for a lost sister. A sister who may be living as part of an ancient and secretive order in Rome. Through these diverse personal stories Stephen Baxter charts a story that has terrifying consequences for what we thought was our place in the world, our perceived natural ascendency in the order of things. Things are going to be very different now ...

Liverpool 1962. A place and time of danger and passion. A thrilling new music is bursting on to the grey streets of the post-war city. A music that electrifies. A music that promises to change everything. But in Cuba, on the other side of the earth, nuclear tensions are at breaking point. The end of the whole world could be just days away. At the heart of it all is 14-year-old Laura Mann. She's on the run, hunted by strange forces fighting over the future of humanity. And Laura's about to discover that her own life is at stake - in ways she could never have imagined...