The Greater Washington region is home to thousands of acres of natural land, and thousands of residents who steward these precious resources every day. Local nonprofits like the ones featured in this catalog mobilize and educate volunteers to protect our biodiversity, expand access to green spaces, prevent pollution, and promote sustainability. Neighbors, young and old, become community scientists, park stewards, and environmental advocates. Together, they remove millions of pounds of trash from our rivers and forests, propagate tens of thousands of native plants, and equip hundreds of communities with clean energy infrastructure. Though it takes everyone to address our global climate crisis, communities of color often experience the brunt, with under-resourced neighborhoods having below-average tree canopy coverage and higher heat indexes. Local nonprofits reach people where they are – tapping their unique strengths, building relationships, and providing training for good green jobs – to welcome them into a growing environmental movement.