"A captivating, critical book that describes, with haunting details, how the tiniest humans are suffering the biggest from the climate crisis. Dr. Hendrickson makes a profound case that caring for the Earth is just as important to our children's lives as carseats and vaccines."— Michaeleen Doucleff, PhD, New York Times bestselling author of Hunt, Gather, Parent "With The Air They Breathe, pediatrician Debra Hendrickson provides a gripping and disturbing frontlines account of the tremendous harm that the climate crisis is already inflicting on our children—those who had the least role in creating the problem. Read this book and be inspired to make a difference while we still can."— Michael E. Mann, Presidential Distinguished Professor of Earth & Environmental Science at the University of Pennsylvania and author of Our Fragile Moment "Pediatricians are among the most trusted people in our society, and this fine book reminds us why: they care about the most vulnerable, in very specific and useful ways. This book imagines that caring on a scale big enough to change the world!" — Bill McKibben, author of The End of Nature "A must-read for every doctor, every medical school professor, every lawmaker, and every parent. Dr Hendrickson tells us not only what’s at stake because of the climate disruption we are already experiencing, but who is at stake: those we hold most dear. Dr. Hendrickson is thoughtful and persuasive about what we must do to protect our children, and how we should adapt in the years ahead." — Dominique Browning, Director and Co-Founder, Moms Clean Air Force