Some people might find the title question easy to answer: People are polluting our planet! From plastic bottles and straws to landfills and mining waste, there are so many ways we harm Earth by the ways we dispose of things. Readers learn about many of them in this book, which for some may serve as a call to action to change their ways! Including ideas of conservation and Earth science as well as civic duty, the main content is age-appropriate for emerging readers. Artistic renderings of the consequences of pollution directly correlate with the engaging text to aid in comprehension.