John Muir was a Scottish-American naturalist and writer who played a key role in the creation of national parks in the United States. He co-founded the Sierra Club and worked tirelessly to preserve wilderness areas like Yosemite Valley.
Theodore Roosevelt was the 26th president of the United States, known for his progressive reforms and conservation efforts. He championed the creation of national parks and strengthened the country’s role as a global power.
Marjory Stoneman Douglas was an American journalist, author, and conservationist best known for her work protecting the Florida Everglades. She wrote The Everglades: River of Grass (1947), which helped change public perception of the Everglades from a useless swamp to a vital ecosystem.
