American Rivers

Protecting and restoring healthy natural
rivers

American Rivers is a national conservation organization dedicated to protecting and restoring healthy natural rivers and the variety of life they sustain for people, fish, and wildlife.

American Horticultural Society

Making America a nation of gardeners, a land of
gardens

The American Horticultural Society (AHS), founded in 1922, is an educational organization that recognizes and promotes excellence in American horticulture.

American Hiking Society

Promoting and protecting foot trails and the
hiking experience

Founded in 1976, American Hiking Society is the only national voice for hikers – promoting and protecting foot trails and the hiking experience.

American Forests

Growing a healthier world

American Forests is a world leader in planting trees for environmental restoration, a pioneer in the science and practice of urban forestry, and a primary communicator of the benefits of trees and forests.

American Forest Foundation

Working for healthy forests, quality
environmental education, and informed decision-making

The American Forest Foundation (AFF) is an education and conservation organization working for healthy forests, quality environmental education, and informed decision-making about our communities and our world.

The American Chestnut Foundation

Working to restore the king of the forest

The American Chestnut Foundation (TACF) was founded in 1983 to restore the American chestnut tree to its native range within the woodlands of the eastern United States using a scientific research and breeding program developed by its founders.

American Lands Alliance

Working to protect wildlife and wild
places

American Lands Alliance was founded in 1991 at the height of the Ancient Forest wars in the Pacific Northwest.

Acterra

Action for a sustainable earth

Acterra is a San Francisco Bay Area organization with a 37-year history of innovation in bringing people together to address environmental challenges and create local and regional solutions that foster a healthy natural environment.

The Adirondack Council

Defending the East’s greatest wilderness

The Adirondack Council is an environmental group that has been working since 1975 to protect the open-space resources of New York State’s six-million-acre Adirondack Park and to help sustain the natural and human communities of the region.

Access Fund

Your climbing future

The Access Fund is the national advocacy organization that keeps U.

1000 Friends of Florida

Building better communities

Founded in 1986 as a membership organization, 1000 Friends of Florida promotes healthy urban and natural places by wise management of growth and change.

1000 Friends of Oregon

Working with Oregonians to enhance our quality
of life

1000 Friends of Oregon was founded in 1975 by Governor Tom McCall and Henry Richmond as the citizens’ voice for sound land use planning.

Alliance to Save Energy

Creating an energy-efficient world

Founded in 1977, the Alliance to Save Energy is a coalition of business, government, environmental and consumer leaders.

Amazon Conservation Association

Conserving the biological diversity of the
Amazon Basin

The Amazon Conservation Association works to conserve the biological diversity of the Amazon Basin.

Amazon Conservation Team

Conserving biodiversity, health, and culture in
tropical America

The Amazon Conservation Team (ACT) was created in 1995 with the conviction that if international rainforest conservation efforts are to succeed, the active and meaningful participation of indigenous people is essential.

America the Beautiful Fund

Help save the beauty of the past by investing
in the future growth of America

America the Beautiful Fund (ABF) started in 1965 to encourage volunteer citizen efforts and to protect the natural and historic beauty of America.

Alaska Conservation Foundation

Linking donors and Alaska’s conservation
community

Founded in 1980, the Alaska Conservation Foundation (ACF) builds strategic leadership and support for Alaskan efforts to take care of wildlands, waters, and wildlife, which sustain diverse cultures, healthy communities, and prosperous economies.

Alaska Marine Conservation Council

Protecting the natural diversity and integrity
of Alaska’s marine ecosystems

Formed in 1994, the Alaska Marine Conservation Council (AMCC) is a community-based organization dedicated to protecting the long-term health of Alaska’s oceans and sustaining the working waterfronts of our coastal communities.

Alaska Wilderness League

Your land, your voice

Alaska Wilderness League was founded in 1993 to further the protection of Alaska/s amazing public lands.

Aspen Center for Environmental Studies

Inspiring a life-long commitment to the
earth

Founded in 1969, the Aspen Center for Environmental Studies (ACES) works to inspire a life-long commitment to the earth by educating for environmental responsibility, conserving and restoring the balance of natural communities, and advancing the ethic that the earth must be respected and nurtured.

Appalachian Mountain Club

Promoting the protection, enjoyment, and wise
use of the Northeast outdoors

Founded in 1876, the Appalachian Mountain Club is America’s oldest conservation and recreation organization.

Appalachian Trail Conservancy

Join the journey

The Appalachian Trail Conservancy (ATC) is a volunteer-based, private organization dedicated to the conservation of the 2,175-mile Appalachian National Scenic Trail, a 250,000-acre greenway extending from Maine to Georgia.

Appalachian Voices

Bringing people together to protect our
mountain heritage

Appalachian Voices brings people together to solve the environmental problems having the greatest impact on the central and southern Appalachian Mountains.