This is one of my favorite books and I believe that everyone ought to read this book as it is fascinating and will open your eyes!
This book covers everything, from the way that we first evolved to live in groups, to the development of our diets and the role that this played in human disease/development; to our migration patterns and the ways that germs caused us to evolve.
If you are looking for a great read that will open your eyes about humanity I really recommend this book!