Book excerpt: Clean air is essential for all living creatures—plants, animals, and people—to live healthy lives. Every Breath We Take is a positive, life-affirming look at clean air, with a subtle message about how air can be dirtied—and how it can be cleaned up. Photographs of beautiful children around the world exploring air through touch, smell, sound, and sight underscore the importance of clean air to all life on earth. This is science that surrounds us. The first step to cherishing something is recognizing its importance and understanding why it is necessary. A portion of the proceeds from the sales of this book will be donated to Moms Clean Air Force, a national movement of over a half million moms, dads, and grandparents who are protecting the right of every child to breathe clean air.