Kilauea, on Hawaii's Big Island, is the world's most active volcano. Watch the full episode now.

Hawaii isn't all idyllic beauty. Watch the full episode of Violent Hawaii online now.

(Airs Sunday, August 15) Hawaii is a place of idyllic beauty. But it is also a land of volcanic fury, raging mountaintop blizzards, dangerous rockslides, monster waves, and even tsunamis.

(Airs Sunday, July 11) Returning home to the Isle of Mull after 15 years abroad, Gordon Buchanan was happy for the chance to take a new look at his native land, through his camera lens.

(Airs Sunday, December 13) Shark Mountain takes viewers on a dive of a lifetime to reveal underwater creatures unlike anywhere else in the world.

With over 25,000 unique species, Hawaii is one of the most biologically diverse regions on the planet. These animals and plants live in a delicate balance.

These excerpts from the NATURE episode "Violent Hawaii" demonstrate how volcanic islands are formed, and what scientists can discover studying magma, lava and eruptions.

In this video-enhanced lesson, students will use a combination of multimedia and hands-on activities to learn about different types of volcanoes, why volcanic eruptions happen, and the impact eruptions have on the Earth's landscape. (Grades 9-12)

Students will learn about the diversity of life and land in the desert, create artistic responses to the film, and explore interactive Web site features.

Two great films provide an account of the inner workings of one of the last truly wild places on earth in Kalahari - The Great Thirstland & The Flooded Desert.