Yosemite National Park: Dr. Fristrup, the senior acoustic Specialist with the National Park Service's Natural Sounds Program, talks about the effect of noise on predator-prey relationships, animal communications, and on human physiology.

Yosemite National Park: This file discusses the inspiring scenery of Yosemite and brings to light the changing nature of what can be seen from various viewpoints. This episode further discusses some of the ideas regarding the development of a Scenic Vista Management Plan.

Yosemite National Park: What do children living a primitive life in Yosemite do for fun in this day and age? This video explores a park ranger’s youth in Tuolumne Meadows in the late 1950s and then follows the activities of three sisters whom live in the park currently.