TRIPLETT, N.C. (AP) -- The way Eustace Conway sees it, there's the natural world, as exemplified by his Turtle Island Preserve in the Blue Ridge Mountains. And then there's the "plastic, imitation" one that most other humans inhabit. But the border between the two has always been a porous one. When he bought his first 107 acres in 1987, Conway's vision for Turtle Island was as "a tiny bowl in the earth, intact and natural, surrounded by pavement and highways." People peering inside from nearby ridges would see "a pristine and green example of what the whole world once looked...