NASA, NATO, and the UN sent explorers to the asteroid's surface...and discovered marvels and mysteries to drive researchers mad.For the Stone was from space--but perhaps not our space; it came from the future-but perhaps not our future; and within the hollowed asteroid was Thistledown. The remains of a vanished civilization. A human--English, Russian, and Chinese-speaking--civilization. Seven vast chambers containing forests, lakes, rivers, hanging cities...And museums describing the Death; the catastrophic war that was about to occur; the horror and the long winter that would follow. But while scientists and politicians bickered about how to use the information to stop the Death, the Stone yielded a secret that made even Earth's survival pale into insignificance.

    Butler’s shattering meditation on symbiosis, love, power and tough choices. It won the Hugo, Locus, Nebula and Science Fiction Chronicle awards and is widely regarded as one of her greatest works.Years ago, a group known as the Terrans left Earth in search of a life free of persecution. Now they live alongside the Tlic, an alien race who face extinction; their only chance of survival is to plant their larvae inside the bodies of the humans.When Gan, a young boy, is chosen as a carrier of Tlic eggs, he faces an impossible dilemma: can he really help the species he has grown up with, even if it means sacrificing his own life?Perfect for fans of the thrilling Arrival and the works of Ursula Le Guin.

    Minh is part of the generation that first moved back up to the surface of the Earth from the underground hells, to reclaim humanity's ancestral habitat. She's spent her entire life restoring river ecosystems, but lately the kind of long-term restoration projects Minh works on have been stalled due to the invention of time travel. When she gets the opportunity take a team to 2000 BC to survey the Tigris and Euphrates rivers, she jumps at the chance to uncover the secrets of the shadowy think tank that controls time travel technology.