The Precipice — Ben Bova

The Asteroid Wars have begun....

Dan Randolph is one of the richest men on Earth--a planet spiralling into environmental disaster. His bitter rival, Martin Humphries, is the fabulously wealthy heir to the Humphries Trust. Both men know that space-based industry is the way of the future--but Humphries does not care if Earth perishes in the process.

As Randolph flies out to the Asteroid Belt pursuing a desperate plan that may save Earth's economy, Humphries makes his move--and the future of mankind lies in Randolph's hands.