Preface
by Ray Bradbury
The Nonmetallic Isaac
or It’s a Wonderful Life
by Ben Bova
Strip-Runner
by Pamela Sargent
The Asenion Solution
by Robert Silverberg
Murder in the Urth Degree
by Edward Wellen
Trantor Falls
by Harry Turtledove
Dilemma
by Connie Willis
Maureen Birnbaum After Dark
by Betsy Spiegelman Fein
Balance
by Mike Resnick
The Present Eternal
by Barry N. Malzberg
PAPPI
by Sheila Finch
The Reunion at the Mile-High
by Frederik Pohl
Plato’s Cave
by Poul Anderson
Foundation’s Conscience
by George Zebrowski
Carhunters of the Concrete Prairie
by Robert Sheckley
The Overheard Conversation
by Edward D. Hoch
Blot
by Hal Clement
The Fourth Law of Robotics
by Harry Harrison
The Originist
by Orson Scott Card
A Word or Two from Janet
by Janet Jeppson Asimov
Fifty Years
by Isaac Asimov