The problem with this book is that you start to run around and tell your friends and colleagues about some of the remarkable things in the book and they look at you like your nuts. Max, how many people believed you when you told them about the slime mold? Bet they just kind of nodded their head and changed the subject.
I agree about reading it more than once, there is just too much to absorb. Bryson writes amazing paragraphs and you think that there is probably a whole book waiting to be written.
Every page brings the wonder of discovery. A book not to be missed.