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In the America's with David Yetman
Ice, Rock, and Water: The Sierra Nevada
Season 2
Episode 205
California’s Sierra Nevada is the largest and highest mountain range in the continental United States and, until recently, a geological puzzle. The source of colossal wealth in the form of gold and, now, water, it was a formidable roadblock to the settlement of the state. We visit the range with renowned tectonic specialist Eldridge Moores.
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The Butantan Institute in São Paulo houses venomous creatures that protect human lives.
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The arrival of crowds and developers threaten unusual features of Baja California.
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Native cultures view snakes as spiritually significant elements of nature.
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Our largest national park has become an important natural laboratory.
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The once-great Colorado River faces a dried-out future as more rely on its resources.
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Phantom Ranch, accessible only by trail, is the Grand Canyon's sole permanent settlement.
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Boating through the Grand Canyon provides a setting for reflection on the Colorado River.
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One of the world's greatest cities deals with falling water tables and sinking earth.
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Explore the never-ending race to survive climate changes in the Galapagos Islands.
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Travel along the 500-mile-long Blue Ridge Parkway, part of our national park system.