Sean Randall reviewed End of an era by Robert J. Sawyer
Review of 'End of an era' on 'Goodreads'
what an utterly superb little book this turned out to be. Time travel, lots of jargon, and most of all a brilliantly innovative rationale for the extinction of the dinosaurs. The Martians grasp of English provided plenty of amusement, the only thing that was off was the profanity.