Interesting collection of essays on human evolution and related subjects.

I bought this book in a nice bookstore in Palo Alto while waiting for my coworkers for dinner.

This book combines a history of philosophy with a novel. Both are quite interesting and while written for young adults, this was an enjoyable book.

I got this book in paperback but I read it mostly on my phone. I think I started reading it once, many years ago. The first 50 pages were a little dry but it got better later in the book. The last half was the most interesting.