Empire Builders

Dan Randolph, privateer, has become Dan Randolph, empire builder. His staff has found evidence that the greenhouse effect has been gathering speed and that, soon, Earth will be on the edge of the greenhouse "cliff." Millions will die unless humankind changes its ways immediately. On the run from the world government council, which is determined to keep this report secret and has confiscated his companies on trumped-up charges, Randolph battles to get the word out before it's too late.

This is Bova at his best - hard science and a fast-moving plot set in the near future.