Age of Miracles Author:John Brunner When suddenly all the fissionable material on Earth was exploded, Earthmen had their first notice of te\he alien's arrival. — And by the time the panic, death and chaos had been sorted out, reports were coming in about mysterious cities scattered across the face of the planet--huge areas of flickering light and awesome free energy, disorienting t... more »o human senses and impregnable to attack.
The question was: were they alien bases...or somehting else?« less