My four year old loves these Magic School Bus books! This is one of my favorites to read to him. This series tells stories about a fictional class going on wild field trips with their science enthusiast teacher to learn more about various topics. This book explore the science behind climate change. I really like the way this series combines fiction (and a plot!) with the delivery of scientific concepts, and my four year old does too. There is text on several levels (a main story along with extra information on the margins). I like that we can read the main plot now to a four year old and that there will be more concepts and information for him to access as he gets older. This book presents the science behind climate change in a way that my preschooler can understand (and to be honest, it helped my own understanding as well). There are some great tips for children about what they can do to prevent climate change and my preschooler has taken that really seriously! It is great to see him thinking about what he can do for the planet and feeling empowered to help. I would recommend this for ages 4-8.