Sheri S. Tepper "Grass" Mass Market Paperback

Vorgrik says: Very good condition.

Generations ago, humans fled to the cosmic anomaly known as Grass. But before humanity arrived, another species had already claimed Grass for its own. It too had developed a culture......

Now a deadly plague is spreading across the stars, leaving no planet untouched, save for Grass. But the secret of the planet's immunity hides a truth so shattering it could mean the end of life itself.

Sent to the land of Grass to find out how that planet has escaped the deadly plague that threatens the rest of the galaxy, a strong-willed woman makes some unexpected--and frightening--discoveries.