Though I was drawn in by the story and the characters, I was fascinated by the science. As a doctor in Texas, Chimenti has an amazing talent for breaking down complex scientific processes for his audience. Though I was somewhat familiar with some of the geological theories discussed, I learned quite a bit about newer terms such as the "Verneshot" - a large chunk of the crust launched into the air that comes crashing down elsewhere leaving huge swaths of destruction in its wake.
Overall, I have to say The Edge of Forever kept my interest from the first few pages to the explosive finale. I was rooting for the good guys from the very beginning and will be interested to see what happens in the next book — The Edge of Forever: Brink of Extinction — which will be released in January 2010.
If you like your disaster action adventure fiction with some serious science behind it, I can definitely recommend The Edge of Forever.