1. Cumberland Island: Animal Encounters
2. Dry Tortugas: Fort Finds and Deep Dives
3. Great Smoky: Big, Tiny, and Slimy
4. Padre Island: Keeping Up with the Kemp’s Ridleys
5. Apostle Islands: Sunken Ships and Carved Caves
6. Glacier National Park: Grizzly Bears and Rough Rapids
7. Aniakchak: Wicked Whitewater
8. Denali: What Lies Beneath
11. Mount Rainier: Man Against Mountain
12. Grand Teton: Climbing in Grand Exposure
13. Rocky Mountain High: Ridin' High
14. Capitol Reef: Cliffs, Canyons and Culture
15. Acadia: Boulders and the Bay
16. South Dakota: Road Trip
17. Big Bend: Bend But Don't Break
18. St. Croix: Into the Abyss
19. Virgin Islands National Park
20. Great Basin: Top to Bottom Extremes
21. Yosemite: Uphills and Down Falls
22. Best of Wildlife: Big & Small
23. Best of Water Adventures
24. Best of Extreme Landscapes
25. Best of California National Parks
26. Yellowstone: Fire and Ice