Stretching out in the Everglades

We're heading down to Florida today to celebrate the 75th year of Everglades National Park, the largest tropical wilderness in the United States. The park was established in 1947 to defend a fragile ecosystem, and covers about 20 percent of the entire Everglades wetland. But even with the park service's protection, the Everglades' features, primarily shallow freshwater pools, have suffered significantly due to human activity.
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