Many people believe humans have a responsibility to take care of the planet. However, other people believe it isn't their job to protect the environment. Readers discover the facts behind these two opposing points of view and how those points of view determine people's actions. Along the way, they examine their own opinion on this topic, which aligns with common science curricula, and learn to use facts to back up their opinion. Fact boxes, graphic organizers, and vibrant photographs come together to create an eye-catching design that enhances this exploration of critical-thinking skills.