Tree sitting
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Tree sitting is a form of environmentalist civil disobedience in which a protester sits in a tree, usually on a small platform built for the purpose, to protect it from being cut down. Supporters usually provide the tree sitters with food and other supplies.
Demonstrators in a tree at the Berkeley oak grove protest in 2008
The tree-sitters' camp in Berkeley, California, protesting the planned removal of coastal live oaks. The protesters were in the trees from December 2, 2006, to September 9, 2008, making it the longest-running urban tree-sit in history.
A view of the Fall Creek village showing aerial walkway
Environmentalism
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Environmentalism or environmental rights is a broad philosophy, ideology, and social movement about supporting life, habitats, and surroundings. While environmentalism focuses more on the environmental and nature-related aspects of green ideology and politics, ecologism combines the ideology of social ecology and environmentalism. Ecologism is more commonly used in continental European languages, while environmentalism is more commonly used in English but the words have slightly different connotations.
Environmentalism on United States stamps
Levels of air pollution rose during the Industrial Revolution, sparking the first modern environmental laws to be passed in the mid-19th century.
John Ruskin, an influential thinker who articulated the Romantic ideal of environmental protection and conservation
Original title page of Walden by Henry David Thoreau