The colonists of the planet Botany return to the planet where they were abandoned, carrying the technology to battle the deadly Eosi and unleash a surprise attack at the enslaved planet Earth

Scientist Dan Sylveste forges a dangerous alliance with the cyborg crew of the starship "Nostalgia for Infinity," in an attempt to learn the truth about how and why the Amarantin civilization was annihilated nine hundred thousand years earlier, not realizing that someone or something does not want the secret to be revealed.

The Inhibitors, an alien race designed to locate and destroy any life form reaching a certain level of intelligence, have set their sights on humanity and it is up to a ragtag group of refugees to stop the invasion before it is too late.

Hail Bristol has made a name for herself in the galaxy for everything except what she was born to do: rule the Indranan Empire. When she is dragged back to her home planet to take her rightful place as the only remaining heir, she finds that trading her ship for a palace is her most dangerous move yet.

At a time when the number of Dragonriders has fallen too low for safety and only one Weyr trains the creatures and their riders, the Red Star approaches Pern, threatening it with disaster.

On a cold spring night in 1952, a huge meteorite fell to earth and obliterated much of the east coast of the United States, including Washington D.C. The ensuing climate cataclysm will soon render the earth inhospitable for humanity, as the last such meteorite did for the dinosaurs. This looming threat calls for a radically accelerated effort to colonize space, and requires a much larger share of humanity to take part in the process. Elma York's experience...