DORIS DUKE FOUNDATION
In 1993, Doris Duke left behind a 2,700-acre New Jersey estate; 30 years later, the property is being transformed into a laboratory for restoring wetlands, forests and wildlife
In 1969, Robert Redford bought 5,000 acres in Utah to protect wilderness. 57 years later, 3,343 acres remain protected from development at Sundance Mountain Resort today
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