Nature Conservancy, nonprofit organization established in 1951 to preserve or aid in the preservation of natural environments. It protects wilderness areas in the United States and Canada and is affiliated with similar groups in Latin America and the Caribbean. It maintains the world's largest private system of nature sanctuaries.
"Nature Conservancy." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (September 22, 2018). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/nature-conservancy
"Nature Conservancy." The Columbia Encyclopedia, 6th ed.. . Retrieved September 22, 2018 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/nature-conservancy