Examine the proliferation of protected lands and the protection of predatory animals.

Following World War II, the parks are overwhelmed as visitation reaches 62 million people a year. A new billion-dollar campaign — Mission 66 — is created to build facilities and infrastructure that can accommodate the flood of visitors. A biologist named Alfred Murie introduces the revolutionary notion that predatory animals, which are still hunted, deserve the same protection as other wildlife. In Florida, Lancelot Jones, the grandson of a slave, refuses to sell to developers his family’s property on a string of unspoiled islands in Biscayne Bay and instead sells it to the federal government to be protected as a national monument. In the late 1970s, President Jimmy Carter creates an uproar in Alaska when he sets aside 56 million acres of land for preservation — the largest expansion of protected land in history. In 1995, wolves are re-established in Yellowstone, making the world’s first national park a little more like what it once was.