Marcia Lesky

The National Parks Conservation Association is a nonpartisan organization that has been working to safeguard national parks since 1919. The non-profit company is based in Washington. With over 1.6 million members and supporters, they aim to protect and preserve the most iconic and inspirational places in the country for future generations. The organization believes in engaging the next generation to ensure the protection of national parks, which is why they launched the Next Generation Advisory Council. The CEO of the American company is Theresa Pierno.

National Wildlife Federation provides wildlife conservation services. Its services include restoring gray wolves, protecting the everglades, preserving wetlands, flood plain management, fighting effects of climate change and saving Alaska's Copper River Delta. The company was founded by Jay Norwood Darling in 1936 and is headquartered in Reston, VA.

Defenders of Wildlife operates organization for preservation of wild animals and native plants. It also provides action alerts and information services. The company was founded in 1947 and is headquartered in Washington, DC.