USGS

The USGS is a science organization that provides impartial information on the health of our ecosystems and environment, the natural hazards that threaten us, the natural resources we rely on, the impacts of climate and land-use change, and the core science systems...

National Geographic

The National Geographic Society has been inspiring people to care about the planet since 1888. It is one of the largest nonprofit scientific and educational institutions in the world. Its interests include geography, archaeology and natural science, and the promotion...

Appalachian Trail Conservancy

The Appalachian Trail Conservancy (ATC), established in 1925, is a national not-for-profit corporation that is both a confederation of the 31 local organizations with assignments to maintain the Appalachian Trail and a membership organization with support from all 50...