Many children understand recycling at home or school, but these titles in the Putting the Planet First series (4 titles) emphasize sustainable living and its impact on the earth. Double-page spreads introduce concepts through colorful charts, graphs, and diagrams, while photographs spotlight a variety of global initiatives, including paperless schools in Scotland, wind farms in Denmark, and solar-powered clinics in Ghana. What Are Eco-Cities? explains how eco-cities are designed to be zero-carbon through such factors as green spaces, local food, renewable energy, public transportation, water conservation, and eco-friendly housing and buildings. Each book concludes with a look to the future and new technologies that will improve the environment. This eye-opening STEM series not only tackles real-world problems but helps readers recognize their roles in protecting the planet.