All Flesh is Grass Author:Clifford D. Simak An invisible dome encircles the town of Millville, U.S.A. As dissension threatens from within--and nuclear destruction from without--Brad Carter slips through a time-phase boundary into a wondrous parallel world where he meets the aliens, who appear to be simple purple flowers, but are really a complex data system that sweeps from world to world... more », dimension to dimension.
They offer mankind partnership in a grand cosmic scheme--but Brad Carter has to wonder...how many other earths lay empty, swept clean by aliens no world has yet understood...or stopped.« less