ASIMOVIn the Twenty-second century Earth obtains limitless, free energy from a source little understands:an exchange between Earth and a parallel universe, using a process devised by the aliens.But even free energy has a price.The transferece process irself will eventually lead to the destruction of Earth's Sun-and of Earth itself.THE GODS THEMSELVESOnly a few nouwn the terrifying truth-an outcast Earth scientist, a rebellious alien inhabitant of a dying planet, a lunar-born human intuitionist who senses the imminent annihilation of the Sun.They know the truth-but who will listen'they have foreseen the cost of abundant energy-but who will believe'these few beings, human and alien, hold the key to the Earth's survival.