The Everglades features one of the most diverse ecosystems on earth—with a surprising geological history. There are no other Everglades in the world. They are, they have always been, one of the unique regions of the earth. . . . Their vast glittering openness,  . . . the racing free saltness and sweetness of their massive winds, under the dazzling blue heights of space. They are unique also in the simplicity, the diversity, the related harmony of the forms of life they enclose.–Marjory Stoneman Douglas, The Everglades: River of Grass Turn onto Route 821 out of Miami, Florida, leaving behind the palm-lined streets and glinting skyscrapers, and drive about an hour west. When you step…