'Unchecked Time is a story of social change and the unforeseen results of time travel. The discovery of time travel by physics professor Dr. James Gordon in 2133 creates a furious religious and political debate about its use. Amidst the controversy, Dr. Gordon, his daughter Maria and lab assistant Richard leap back in time to change the course of the American urban and population landscape. From post World War II Chicago to the Sixties and beyond, our trio race against time to create a new world free of sprawl and population excesses.
Brilliant story of a young man, his girlfriend, and a professor attempting to "right" two events in the past that speak serious disaster for the quality of human life in the future. Incredibly insightful and philosophical without getting bogged down in the mechanical jargon of time-travel physics. Excellent story that touches on the social ramifications of presenting a concept like time travel to the world.
Update: nine years later and I still recall this book so clearly. Why hasn't this received the popularity it's due? It's so much better than most time travel books.