Disappointingly dull. The televised mini-series did better by concept. In that, the focus was the change the world would go through without us. In this book, it's much more of a "the world as of now" reminder. And, look. If you don't know how bad humans have messed everything up, go ahead and read this book. But, for those of us that get it, it's preaching to the choir. I was hoping for a more in-depth thought experiment, with scientific cause and effect, which this was not. You'd get through four pages of status updates for one paragraph of "without us".