Writing with the astronaut Bill Pogue, Ben Bova has created a breathtakingly believeable thriller set in the near future in space... By 1998, Earth has become an ecological nightmare. Overhead, on a vast metallic island in space, the scientists of the Trikon project undertake research too risky to be conducted anywhere else - research which could save the planet. Then Commander Dan Tighe discovers the truth. Trikon's new priority is espionage. The scientists - consumed…