In 1872, a wondrous region called Yellowstone was set aside as the world’s first national park, giving adventurous travelers access to a geologist’s paradise that seethes with pent-up volcanic forces. As more and more national parks were created—not just in the United States but also in Canada and Mexico—geologists were revolutionizing their field, piecing together a detailed understanding of how the world works. National parks have made these magnificent reminders of the awe-inspiring power of our planet accessible to everyone. Today, there is no better education in the remarkable forces that formed our world than a tour of the national parks of North America. These parks capture a special place in our hearts and draw millions of tourists each year.
| Season | From | To | Episodes |
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| All Seasons | |||
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| Season 1 | October 2015 | 36 | |
| Unassigned Episodes | 0 |
| Season | From | To | Episodes |
|---|---|---|---|
| Unassigned Episodes | 36 |
| Season | From | To | Episodes |
|---|---|---|---|
| Season 1 | 0 | ||
| Unassigned Episodes | 36 |
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