Throughout the 20th century, conservationists and environmentalists have looked to protect wildlife and biodiversity through the creation of parks and other forms of exclusionary wildlife zones. Zones that seek to preserve spaces devoid of human impact - or to create them, by displacing indigenous and poor people who already live there. Today, some academics call this strategy by a pejorative name: Fortress conservation.

In this episode, we look at medieval forest law, the early days of Yellowstone National Park, and spreading concern over how conservation efforts are enacted and enforced around the world.

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Featuring Karl Jacoby, Prakash Kashwan, Rosalyn LaPier, Hadrian Cook, and Vicky Tauli-Corpuz.

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