Annotation
The author of Tides of Light offers his Nebula Award-winning SF classic--a combination of hard science, bold speculation, and human drama. In the year 1998, a group of scientists works desperatey to communicate with the scientists of 1962, warning of an ecological disaster that will destroy the oceans in the future--if it is not averted in the past.
Awards
1980 Nebula Awards
1980 British Science Fiction Association Awards
1981 John W. Campbell Award