Trikon Deception, The - Ben Bova

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. Its crew is split into warring factions; its scientists--consumed by greed, lust and drugs--run the lab for their own gain. Only Commander Tighe can save the Trikon--and only Trikon can save the earth.