In the America's with David Yetman
The road from Oaxaca to Chiapas
Explore the states of Oaxaca and Chiapas in southern Mexico.
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In the America's with David Yetman
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In the America's with David Yetman
Snakes and Culture in the Amazon
Native cultures view snakes as spiritually significant elements of nature.
In the America's with David Yetman
Wrangell-St. Elias National Park
Our largest national park has become an important natural laboratory.
In the America's with David Yetman
The Lower Colorado River
The once-great Colorado River faces a dried-out future as more rely on its resources.
In the America's with David Yetman
The Depths of the Canyon and its Offspring
Phantom Ranch, accessible only by trail, is the Grand Canyon's sole permanent settlement.