Knocking on Heaven's Door: A Novel

On a hotter and more volatile earth in the twenty-third century, humans like Clare and Jon live in utopia, hunting and gathering in small tribal bands, engaged in daily art and ritual, reunited with old friends like the shaggy mammoth and giant ground sloth. Even better, they still have solar- powered laptops and can communicate with each other around the world. The understanding of physics has also advanced. When scientists first cloned extinct species from the Pleistocene, they discovered...