There are three different aspects in this book. Part of it is an argument that a technological human society previously existed and was wiped out something like 15,000 years ago. In this regard, the book borders on the absurd, not much better than the works by the "aliens-built-the-pyramids" crowd.The second aspect is the end-of-the-world fictional narrative. Just watch the movie "The Day After Tomorrow." I think it was inspired by this book.Lastly, there is a quasi-scientific attempt to explain how a rapid and drastic change in the global climate could occur. This would produce a global storm of biblical proportions that could usher in a new Ice Age. This would happen in a matter of months and not years (or decades).Mildly interesting but, keep in mind: neither of these authors has any real credentials. I don't have much confidence in the science behind the claims but it's not a complete waste of time, if you like end-of-the-world books.