1997
- Documentary
- History
Fire Mountain: The Eruption and Rebirth of Mount St. Helens
2004
- Documentary
The Privileged Planet
The search for purpose in the universe
1991
- Documentary
The Story of Yosemite National Park
Breathtaking valleys, gouged by glaciers. dizzying waterfalls. soaring peaks. yosemite's beauty is unique in all the world!
2008
- Documentary
Yellowstone an American Legacy