- male, deceased (1914)
- John Muir was one of the first modern preservationists. His letters, essays, and books telling of his adventures in nature, and wildlife,...
- male
- Carl Pope is the Executive Director of the Sierra Club, an American environmental organization founded by conservationist pioneer John Muir in...
- male
- Adam Werbach is Founder and CEO of Act Now. He is highly regarded as one of the world's experts in sustainability. At age 23, Adam was elected as...
- male
- Paul Rauber is a Senior Editor at the Sierra Club magazine, an American environmental organization founded by conservationist pioneer John Muir in...
- male, 78 years old (Canada)
- Percy Schmeiser is a farmer and seed developer from Western Canada that was involved in a legal battle with Monsanto on farmers' rights versus...
- male
- Myron Ebell is the Director of Global Warming and International Environmental Policy at the Competitive Enterprise Institute. He is also the...
- male, 103 years old
- Edgar Wayburn (born September 17, 1906) is a noted environmentalist who was elected president of the Sierra Club five times in the 1960s. One of...
- male, deceased (1972)
- Norman Clyde was a famous mountaineer, nature photographer, and self trained naturalist. He is well-known for achieving over 100 first ascents,...
- female
- Helena Norberg Hodge is the founder and director of the International Society for Ecology and Culture, a non-profit organisation concerned with the...
- male, deceased (2000)
- David Ross Brower (July 1, 1912 - November 5, 2000) was a prominent environmentalist and the founder of many environmentalist organizations,...
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