Galataria's Echoes by Gail Brown (ebook)

Galataria survived the Devolution War generations ago. The human population saved the planet. Now they too are on the brink of extinction.

Memories of a war they have never seen cross the dimensional boundary to Kalara and Leonard.

At least, they think the dreams are nightmares of Galataria's past.

For Shalin and Jendal on Earth, the dreams are peaceful and serene. A beauty in life they have never seen. 

Dreams bring a bit of both worlds across the unrecognized bridge into the other. 

Galataria and Earth are threatened with ideas, and a life most don't recognize, and many fear.