No one expected the oil to last forever. How right they were.

A geopolitical miscalculation tainted the world's major oil fields with radioactivity and plunged the Middle East into chaos. Any oil that remains usable is more prized than ever. No one can build solar farms, wind farms, and electric cars quickly enough to cope. The few countries still able to export petroleum and natural gas—Russia chief among them—have a stranglehold on the world economy.

Then, from the darkness of space, came Phoebe. Rather than deflect the onrushing asteroid, America coaxed it into Earth's orbit. Solar power satellites—cheaply mass-produced in orbit with resources mined from the new moon to beam vast amounts of power to the ground—offer America its last, best hope of avoiding servitude and economic ruin.

As though building miles-wide structures in space isn't challenging enough, special interests, from technophobes to eco-extremists to radio astronomers...