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The Prince of Wales says restoring nature and tackling global warming are key to keeping Dartmoor special.
Prince William, the Duke of Cornwall, said a 20-year plan for the Duchy's Dartmoor estate aimed to restore peatlands, upland habitats and promote sustainable farming.
The Duchy of Cornwall said researchers had found the national park was prone to increasingly dry summers and frost-free winters.
The project was launched by Prince William during a visit to an area of restored peatland near Princetown on Dartmoor.