Although the gray wolf remains an endangered -- and therefore protected -- species, wolves nevertheless face the same risks as any other animal species.

Journey with Meg Ryan to the jungles of Thailand in search of the white elephant, a rare creature coveted by royalty -- and threatened by extinction.

One of India's most magnificent and endangered animals fulfills its destiny in a remote nature preserve that also shrouds the ruins of a long-fallen empire.

Follow Ewan Mcgregor as he travels to a remote Canadian outpost on Hudson Bay, where he investigates the annual invasion of hungry polar bears.

NATURE's John Denver: Let This Be A Voice explores the American West with the late singer and conservationist.

Iceland is an island of extremes, where some of Europe's biggest glaciers cozy up to some of the continent's hottest volcanic springs.

Dr. Susanne Douglas is finding that the bacteria living in Death Valley may provide clues to extraterrestrial life.

Once the home of a notorious Soviet prison camp, the isolated peninsula of Kamchatka remains a haven for one of Earth's last giants, the grizzly bear.

(Airs Sunday, June 20) While we are mesmerized by their likeness to our species and we have continually found uses for chimps, we never considered what they wanted or needed.