The mission of The Nature Conservancy is to conserve the lands and waters on which all life depends. We're proud of what we've accomplished since our founding in 1951: The Nature Conservancy has protected more than 117 million acres of land and 5,000 miles of rivers worldwide — and we operate more than 100 marine conservation projects globally. We have more than 1 million members and work in all 50 United States and 72 countries around the world — protecting habitats from grasslands to coral reefs, from Australia to Alaska to Zambia. We address threats to conservation involving climate change, fire, fresh water, forests, invasive species, and marine ecosystems.