Dr. Sean Graham teaches Biology at Sul Ross University in Alpine, Texas. He is also the author of American Snakes.

This episode was recorded in the desert ecosystem at water level one mile below the rim in Grand Canyon National Park.

Learn about how the sun, air pressure systems & horse latitudes create deserts around the world from Australia, Africa and the Southwest U.S.

How have animals adapted to live in harsh arid environments. How might you adapt to live in the desert?

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