Scouts working on the Sustainability merit badge learn to conserve energy at home and think about how their food, housing, and consumption choices impact society at large. They make a plan to use the Earth’s resources more wisely. They also learn how the Scout Law and the Scout Oath promote more sustainable communities.
Either Sustainability merit badge or Environmental Science merit badge is required for the rank of Eagle.
Printable helps for requirements:
Here are some more ideas and related achievements to help with the Sustainability merit badge: