Segments from the NATURE video, "Tall Blondes," explore conservation efforts in Africa, using the giraffe population as an example.

For some of the loneliest animals on the planet, captive breeding programs and human intervention may the only hope.

The U.S. State of the Birds report reveals that one-third of our nation's birds are in trouble. But Allison Argo feels optimistic. At least now the issue is getting attention.

Negative attitudes toward wolves enabled a centuries-long extermination campaign that nearly wiped out the gray wolf in the continental United States by 1950.

View additional resources, online and in-print, for NATURE's "The Dragon Chronicles."

Filmmaker Hardy Jones used his camera as a tool for conservation, filming dramatic dolphin hunts and documenting the effects of chemical pollution on dolphins and orcas.

The NRDC has continued to push for greater protection for Yellowstone grizzlies, citing loss of habitat and food sources.

Segments from the NATURE episode "The Good, The Bad and the Grizzly" examine how human interaction with grizzlies has alternately endangered and restored the population, and how humans coexist with grizzlies today.

In this video-enhanced lesson, students will learn how human beings have interacted with and impacted the lives of grizzly bears in Yellowstone Park. (Grades 9-12)

Excerpts from NATURE examine interrelationships between sharks and other species in the marine ecology. Human impact in the ecosystem includes the shark fin industry.