The Trikon Deception by Bova, Ben and Pogue, William R.
In the near future: Earth is an ecological nightmare, and humanity may well go the way of the dinosaurs. But overhead orbits salvation. A vast metallic island in space, Trikon conducts research too risky to be held on earth--research which could save the planet. Yet Commander Dan Tighe discovers that the Trikon's major project is espionage.