New Worlds

For twenty years, in company with her great father, she had watched The Defender grow from a vast metal skeleton into a planet-sized battle globe.

The past—could there be such a thing as a time-shift? The whole idea was a paradox, wasn’t it? Like that yarn about the chap who went back in time and murdered his own grandfather.

The vanguard arrived, decked out in refrigeration suits, installed ten Worldchange units in either hemisphere, began setting up coldsleep bunkers in several of the larger caverns.