Hawaiian Islands Land Trust
Hawaiian Islands Land Trust’s mission is to protect the lands that sustain us for current and future generations.
Heal the Bay
Heal the Bay is a nonprofit environmental organization making Southern California coastal waters and watersheds, including Santa Monica Bay, safe, healthy and clean.
By teaching people how to participate in the democratic process, HEAL Utah is working to ensure fundamental changes occur in the way we make decisions; primarily that the public, not polluters, plays a meaningful role in determining whether our state will serve as an enabler for a toxic economy, or one that promotes a healthy environment in which to raise our families.
Healing Our Waters — Great Lakes Coalition
The Healing Our Waters-Great Lakes Coalition consists of more than 115 environmental, conservation, and outdoor recreation organizations, zoos, aquariums and museums who share a common goal of restoring and protecting North America’s greatest freshwater resource, the Great Lakes.
Healthy Child Healthy World
Healthy Child Healthy World ignites the movement that empowers parents to protect children from harmful chemicals.
Heartwood is a regional network that protects forests and supports community activism in the eastern United States through education, advocacy, and citizen empowerment.
Hells Canyon Preservation Council
Hells Canyon Preservation Council protects and restores the natural treasures of the Hells Canyon-Wallowa and Blue Mountain ecosystems.
Heritage Conservancy is an accredited, not-for-profit conservation organization that specializes in open space preservation, planning for sustainable communities, natural resource protection, property stewardship, historic preservation, adaptive reuse of existing structures, wildlife habitat restoration and biodiversity.
Hill Country Conservancy
Hill Country Conservancy marshals public and private resources to preserve the natural areas and scenic vistas, aquifers and springs, rivers and streams, working farms and ranches and the rural heritage of the Central Texas Hill Country for people to enjoy and cherish for generations to come.
Holistic Moms Network
Holistic Moms Network connects parents who are interested in holistic health and green living.
Holy Cross Project
Global Green has assembled a highly skilled and dedicated project team of national experts paired with local professionals with the goal of transferring knowledge to ultimately make green expertise indigenous to New Orleans.
Human Rights First
Human Rights First is a non-profit, nonpartisan international human rights organization.
Humboldt Baykeeper was launched in October 2004 to safeguard our coastal resources for the health, enjoyment and economic strength of the Humboldt Bay community through education, scientific research and enforcement of laws to fight pollution.
Huron River Watershed Council
The Huron River Watershed Council works to inspire attitudes, behaviors and economies to protect, rehabilitate and sustain the Huron River System.
Iowa PIRG is a consumer group that stands up to powerful interests whenever they threaten our health and safety, our financial security or our right to fully participate in our democratic society.
The Iowa Renewable Energy Association
The Iowa Renewable Energy Association is a membership-based, educational nonprofit organization dedicated to educating Iowans about the sustainable, appropriate use of renewable energy technologies.
Idaho Conservation League
The Idaho Conservation League works to protect Idaho’s environment.
Illinois Association of Park Districts
The Illinois Association of Park Districts is a nonprofit service, research and education organization that serves park districts, forest preserves, conservation, municipal park and recreation and special recreation agencies.
Through iLoveMountains.org, members of the Alliance for Appalachia have come together to use cutting edge technology to inform and involve Americans in their efforts to save mountains and communities.
iMatter was created to reach across regional, ideological, and ethnic borders, to empower youth to organize, and be heard on the issue of global climate change.
Institute for Agriculture and Trade Policy
IATP works locally and globally at the intersection of policy and practice to ensure fair and sustainable food, farm and trade systems.
Institute for Local Self Reliance
The Institute’s mission is to provide innovative strategies, working models and timely information to support environmentally sound and equitable community development.
Institute for Responsible Technology
The Institute for Responsible Technology is a world leader in educating policy makers and the public about genetically modified (GM) foods and crops.
Interamerican Association for Environmental Defense (AIDA)
Founded in 1998, AIDA is a nonprofit environmental law organization that works across international borders to defend threatened ecosystems and the human communities that depend on them.
Interfaith Power & Light
The mission of Interfaith Power & Light is to be faithful stewards of Creation by responding to global warming through the promotion of energy conservation, energy efficiency and renewable energy.
International Energy Agency
The International Energy Agency is an autonomous organization which works to ensure reliable, affordable and clean energy for its 28 member countries and beyond.
International Reptile Conservation Foundation
The IRCF is a member-based organization that actively pursues the conservation of reptiles and amphibians and the natural habitat and ecosystems that support them in a variety of capacities.
International Rivers protects rivers and defends the rights of communities that depend on them.
International Union for the Conservation of Nature
The mission of IUCN is to influence, encourage and assist societies throughout the world to conserve the integrity and diversity of nature and to ensure that any use of natural resources is equitable and ecologically sustainable.
Iowa Natural Heritage Foundation
The Iowa Natural Heritage Foundation protects and restores Iowa’s land, water and wildlife.
Iowa Public Interest Research Group
Iowa PIRG is an advocate for the public interest. When consumers are cheated, or our natural environment is threatened, or the voices of ordinary citizens are drowned out by special interest lobbyists, Iowa PIRG speaks up and takes action.
Iraq Upper Tigris Waterkeeper
Iraq Upper Tigris Waterkeeper was created to protect, restore, and preserve Iraq’s natural environment and the rich cultural heritage that it nourishes.
The Island Institute is a nonprofit organization that serves as a voice for the balanced future of the islands and waters of the Gulf of Maine.
Izaak Walton League of America
The mission of the Izaak Walton League of America is to conserve, maintain, protect and restore the soil, forest, water and other natural resources of the United States and other lands; to promote means and opportunities for the education of the public with respect to such resources and their enjoyment and wholesome utilization.
Jackson Hole Wildlife Foundation
The Foundation is a local group of individuals working to promote ways for our community to live compatibly with wildlife.
James River Association
The mission of the James River Association is to be guardian of the James River by providing a voice for the river and taking action to promote conservation and responsible stewardship of its natural resources.
KAHEA – The Hawaiian-Environmental Alliance
KAHEA is a community-based organization working to improve the quality of life for Hawai’i’s people and future generations through the revitalization and protection of Hawai’i’s unique natural and cultural resources.
Keep Indianapolis Beautiful, Inc.
Keep Indianapolis Beautiful, Inc. unites people to build community and transform public spaces through aesthetic and environmental improvement.
Keep Yellowstone Nuclear Free
Keep Yellowstone Nuclear Free’s mission is to protect the citizens, environment and wildlife of the greater Yellowstone and Grand Teton ecosystems and the Jackson Hole valley from radioactive and hazardous emissions from the U.S. Department of Energy’s Idaho National Laboratory (INL), and to elevate public awareness to the potential threat posed by facilities operating at INL.
Keeper of the Mountains Foundation
The Keeper of the Mountains Foundation aims to educate and inspire people to work for healthier, more sustainable mountain communities and an end to mountaintop removal.
Kentucky Heartwood is a non-profit volunteer group that seeks to protect and restore the integrity, stability, and beauty of Kentucky’s native forests and biotic communities through research, education, advocacy, and non-violent intervention.
Kentucky Sustainable Energy Alliance
The Kentucky Sustainable Energy Alliance works to promote clean, sustainable and affordable energy solutions for Kentucky.
Kentucky Waterways Alliance
The mission of the Alliance is to protect and restore Kentucky’s waterways.
Klamath Forest Alliance
Klamath Forest Alliance’s mission is to promote sustainable ecosystems and sustainable communities and our goal is to defend and protect the biodiversity, wildlife, waters and old growth forests of these wild and rugged watersheds.
Kootenai Environmental Alliance
The mission of the Alliance is to conserve, protect and restore the environment, with particular emphasis on the Idaho Panhandle and the Coeur d’Alene Basin.