The Nature Conservancy is a leading nonprofit conservation organization that works throughout the United States and around the world. Their mission is to conserve the lands and water on which all life depends.
With the help of more than 1 million members, they have built a tremendous record of success since their founding in 1951.
They have protected more than 119 million acres of land and 5,000 miles of rivers worldwide — and  operate more than 100 marine conservation projects globally. They work in all 50 states and more than 30 countries — protecting habitats from grasslands to coral reefs, from Australia to Alaska to Zambia. 
Everything the Nature Conservancy does is rooted in good science — aided by their hundreds of staff scientists. They pursue non-confrontational, pragmatic solutions to conservation challenges  and partner with indigenous communities, businesses, governments, multilateral institutions, and other non-profits.
Their vision is to leave a sustainable world for future generations. The approach is simple. They protect nature,  figure out how to use it better, and bring people together.
Please feel free to visit their website and learn what they have done in your community.