Hot Sky at Midnight

There's no mistaking the terminal phase of irreversible catastrophe. The climate has gone berserk. Rising oceans inundate swamps and deserts. Genetic engineers have yet to redesign the human body to cope with the crud in the air, the water, the food, the soil. Now time has run out. With Earth a lost cause, the satellite worlds twinkling in orbit are prime territory for takeover by the powerful and rich.
They are a single battleground on which the richest and most powerful megacorps, Kyocera-Merck and Samurai Industries, fight, no holds barred. In the artificial purity of satellite air or beneath the bilious skies of Earth, despite newly evolved bacterial plagues and bribe-taking androids, Robert Silverberg's characters pursue destinies both outrageously self interested and heartwrenchingly familiar in a savagely funny story of our planets last gasp.