Original tales by such science fiction luminaries as Orson Scott Card, Harry Turtledove, and Connie Willis, written in honor of Isaac Asimov's fiftieth anniversary in the genre, are set in one of his fictional...
'The world, without rain, is drying up. Rivers are a trickle and we see the shrivelling of the species far from its sources and headed lemming-like for the sea. Time has burst its dams and seeps inside the race-structure with bizarre results...