"Exceptional!"
Although I do not believe most of the timelines stated in the book, I believe the topics discussed are true possibilities. The author has presented them in a way that is interesting and captivating. I was trained in the sciences achieving 99th percentile in the country on the MCAT before entering medical school. My grandfather researched the ionosphere discussed in the book with Van Allen. Although I disregard the date, I believe the U.S. and the World should take head to possible events that may lead to our extinction. Where possible, we should seek their avoidance.