I was hoping for a scientific exploration of air: its composition and behaviors, its interaction with plant and animal bodies, maybe some history of the scientists who made advances in our understanding of it.
Instead, Sherman offers a little science, a lot of history, and then several hundred pages of anti-pollution screed. And, yes, attention needs to be called to air pollution and the changes human activity is wreaking on the most imporant invisible substance in our world, but heavy-handed diatribe wasn't what I wanted when I picked up this book.