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Historical Essay

Leopold, Aldo, 1887-1948

Father of Wildlife Ecology

Learn about the man whose focus on the philosophy of conservation would inspire the environmental movement during the mid-20th century.

Read about Earth Day's founder, Gaylord Nelson, a Wisconsin senator and early environmentalist.

Read about Wisconsin's role in the development of the environmental movement in the United States in the 20th century.

Historical Essay

The Conservation Movement

Read how the modern conservation movement began and flourished in Wisconsin in the 19th and early 20th centuries.

Historical Essay

Nelson, Gaylord, 1916-2005

Founder of Earth Day

This Wisconsin Senator, best known as the founder of Earth Day, championed the preservation of the environment and natural resources.
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