I started reading "The World Without Us" and realized that it's by the same author as this book, which I read years ago. Gaviotas really blew me away at the time, and was a keystone in helping to restore some of my long-term faith in humanity. It's a really amazing story. The kind of book that you have to pass along to someone else. It was given to me by an old friend, and when I was done I sent my copy to Leslie Harpold. She was really excited to read it. I wonder whatever happened to it.