America has thousands, if not millions, of invisible people living from the land and amongst the trees -- but you're right that our city dwellers don't know man

America has thousands, if not millions, of invisible people living from the land and amongst the trees -- but you're right that our city dwellers don't know many wild plants. The most obvious examples are our two major trails, the Pacific Coast and the Appalachian, which take a full year to hike and are done by tens of thousands annually.