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Both conservationists and preservationists appeared in political debates during the Progressive Era (the 1890s–early 1920s). There were three main positions. There were three main positions. Laissez-faire: The laissez-faire position held that owners of private property, including lumber and mining companies, should be allowed to do anything ...
By the early 20th century, the federal government held significant portions of most western states that had simply not been claimed for any use. Conservationists prevailed upon President Theodore Roosevelt to set aside lands for forest conservation and for special scientific or natural history interest. Much land still remained unclaimed even ...
John Muir was one of the founding fathers of the preservation movement in the United States in the late 19th century. He believed that nature had intrinsic value and viewed nature as a sacred religious temple, which opposed the view of many utilitarian conservationists. One of Muir’s first endeavors was helping create Yosemite National Park.
On the basis of researching the history of the region in terms of human activities (such as cotton farming) and ecological events (such as a severe drought that caused a large die-off of trees in the 1920s), Pough wrote a report, "Present Condition of the Tensas River Forests of Madison Parish, Louisiana, and the Status of the Ivory-Billed ...
This timeline of the history of environmentalism is a listing of events that have shaped humanity's perspective on the environment. This timeline includes human induced disasters, environmentalists that have had a positive influence, and environmental legislation .
During 1920s, religious fundamentalists like minister William Bell Riley and William Jennings Bryan, the three-time Democratic presidential nominee, led the battle against the theory of Darwinian Evolution. They considered it false and blasphemous and helped pass laws to make the teaching of evolution in public schools a state crime.
Environmental health movement dating at least to Progressive Era (the 1890s - 1920s) urban reforms including clean water supply, more efficient removal of raw sewage and reduction in crowded and unsanitary living conditions. Today Environmental health is more related to nutrition, preventive medicine, ageing well and other concerns specific to ...
Doug Tompkins and Kristine Tompkins – entrepreneurs turned conservationists; together have protected 2,200,000 acres (8,900 km 2) in Chile and Argentina; Henry David Thoreau – author, naturalist and development critic; Timothy Treadwell – documentary filmmaker, naturalist and founder of the bear-protection organization "Grizzly People"