In this lesson, students use segments from the NATURE episode "Salmon: Running the Gauntlet" to explore ways in which humans have impacted salmon populations.

Using segments from the PBS series Nature episode, Invasion of the Giant Pythons, students will explore pythons and their impact on other species.

This video-enhanced lesson uses the NATURE episode "Spring's Eternal: Florida's Fountain of Youth" to learn about and explore Florida's springs ecosystem with particular focus on the animal life that lives there.

This video-enhanced lesson uses clips from the NATURE film "Crash: A Tale of Two Species" to explore the interrelationship between the horseshoe crab and a small migratory bird called the red knot. (Grades 5-8)

This lesson uses clips from NATURE's episode "The Loneliest Animals" to explore a variety of captive breeding programs. (Grades 5-8)

This video enhanced lesson uses excerpts from the NATURE film “Tall Blondes” to illustrate the effects of wildlife conservation and relocation, using giraffes as an example. (Grades 5-8)

This video-enhanced lesson uses the eagle to model universal avian life stages. (Grades 2-3)

This video-enhanced lesson discusses the processes of weathering and erosion and how they work together to shape the earth's landscape. (Grades 9-12)

This video-enhanced lesson focuses on symbiosis and ecological relationships. Using sharks and marine species as examples, students will investigate the many ways that species that live in close proximity to each other might interact in an ecosystem, and will then explore the ways that ecosystems can be thrown out of balance, often as a result of human action. (Grades 9-12)