When Kermit sang “It’s Not Easy Being Green,” the famous frog wasn’t referencing the cost of solar panels. Nevertheless, there’s no shortage of authors hoping to change the Muppet’s mind. With The Lazy Environmentalist, Josh Dorfman lays out a resource-heavy guide to greening your lifestyle, from travel to pet toys. Put Your Life on a Diet: Lessons Learned from Living in 150 Square Feet by Gregory Johnson and Little House on a Small Planet by Shay Salomon both address rethinking your needs and improving your life by scaling back. Reading these three books won’t make you Al Gore, but it might provide a path toward a lighter, more eco-friendly lifestyle.