Search Nonprofits

Working in partnership with the community to preserve, protect, and enhance the natural resources of the Santa Monica Mountains for the benefit of the environment and for present and future generations through: land acquisition and conservation easements; habitat preservation and restoration; and research and education.

Oceanic Preservation Society (OPS) is a non-profit organization that creates film, photography and media, inspiring people to save the oceans. Founded in 2005 by renowned photographer and avid diver Louie Psihoyos, OPS is headquartered in Boulder, CO, conveniently between two oceans. OPS's first film, The Cove, has won dozens of awards around the world, including the Oscar® for Best Documentary in 2009, and inspired over a million people to action.

To aid in the protection, preservation and restoration of the natural environment of the nation's major rivers and their watersheds.To expand awareness of environmental issues and responsibility encompassing the river.To create a desire and an opportunity for stewardship and responsibility for a cleaner river environment.

The Center for Resilient Cities builds robust and thriving urban communities that are healthy, just, economically viable and environmentally sound. We envision a world of resilient cities filled with clean water, clear air, green landscapes, sustainable and just food systems, and healthy people in economically thriving neighborhoods.

As the official philanthropic and collaborative partner of Grand Canyon National Park, Grand Canyon Conservancy’s mission is to inspire generations of park champions to cherish and support the natural and cultural wonder of Grand Canyon.

We provide knowledge and inspiration, conservation and advocacy, and logistical support for the climbing community.

As the national voice for hikers, American Hiking Society helps preserve and protect the hiking trails and natural areas that hikers cherish and seek for exploration, exercise and education.

Nature Forward (formerly known as the Audubon Naturalist Society) inspires residents of the greater Washington, DC, region to appreciate, understand, and protect their natural environment through outdoor experiences, education, and advocacy.

Friends of Great Smoky Mountains National Park assists the National Park Service in its mission to preserve and protect Great Smoky Mountains National Park by raising funds and public awareness, and providing volunteers for needed projects. Whatever you love about the Smokies, being a Friend helps protect it! With your help, we have raised more than $75 million in support of environmental education, wildlife management, historic preservation, cutting-edge research, trail rehabilitation, and much more in America’s most-visited national park.

To provide collaborative leadership to create and sustain a successful Mill River Park

Through our annual "Denver Digs Trees" program, we distribute and plant more than 1,000 public trees each spring. Many of these trees are planted in Denver's most underserved neighborhoods. Our volunteer "Community Forester" program trains citizens to act as stewards over Denver's urban forest. The Park People manages Denver's Gates Tennis Center -- one of the country's premier public tennis facilities. We also raise private funds for public park projects, including building renovation, landscape projects, and historic preservation of park structures.

In partnership with the City of New York and the community, the Prospect Park Alliance restores, develops, and operates Prospect Park for the enjoyment of all by caring for the natural environment, preserving historic design, and serving the public through facilities and programs. Prospect Park's 585 acres of meadows, waterfalls, forest, lakes, and athletic facilities comprise a masterwork of urban green space.