Hank Green is great in SciShow, and his brother is great author. I went to do this book not expecting a lot – and I really didn't like it at first. But as I got into it, I was able to appreciated better. I really like I'm going feeling of optimism throughout, and I still have no idea who or why Carl is/was, but the overall feeling is that Earth's goodness, hidden though it is, is true and identifiable – it is an optimistic view during this current catastrophe of the pandemic!