This nonfiction book for teens outlines the science behind global heating and its root causes, provides ways to take action and honors the efforts of the millions of people from around the world working tirelessly to help the planet.

Introduction -- 1. Global heating 101 : a climate science primer -- 2. Climate changed : the consequences of global healing -- 3. How we got here : the root causes of the climate crisis -- 4. Changemakers and climate heroes -- 5. What now? : solutions to the climate crisis -- 6. What if...just in case : how to live in a changing and uncertain world -- A final word from the author.