It's peak tourist season, but the most popular spot in Yosemite is eerily quiet. There are no hikers on trails or climbers on cliffs in the Valley. For the first time in nearly 30 years, a wildfire has closed major portions of the park due to heavy smoke. Yosemite Valley will remain shut indefinitely.

In this episode, Ezra looks at the future of fire in Yosemite. He hikes with a scientist studying how climate change could drastically transform its landscape, talks with the park's first female fire chief, and learns about life growing up in a fire zone.